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Class10_Reflection_d0.5 cbse

Total questions: 149

Worksheet time: 2hrs 18mins

Name
Class
Date
1.
The ray of light that strikes a reflecting surface is called ________.
a)
incident ray
b)
reflected ray
c)
normal ray
d)
none of the above
2.
MCQ 02
Why can you see most objects?
a)
A. they emit light
b)
B. light refracts through them
c)
C. light reflects off them
d)
D. they absorb light
3.

In order to see a picture it must

a)

produce light

b)

reflect light

c)

absorb light

4.
MCQ 011
According to the laws of reflection, if i = angle of incidence and r = angle of reflection,
a)
A. i =  r
b)
B. i >  r
c)
C. r >  i
d)
D. i is not equal to r
5.

Which diagram represents diffuse reflection?

a)

A

b)

B

c)

C

d)

D

6.
The imaginary line perpendicular to a reflecting surface is called _____.
a)
crooked line
b)
parallel line
c)
angular line
d)
normal line
7.

Why does the straw appear to be bent?

a)

light is reflected

b)

light is absorbed

c)

light is turned

d)

light is refracted

8.

What is the best explanation for Mickey seeing himself in the mirror?

a)

refraction

b)

absorbed

c)

reflection

d)

flipped

9.
When light bends it is ______
a)
Reflection
b)
Absorption
c)
refraction 
d)
optical density
10.
When light bounces back it is _____
a)
Reflected
b)
Refracted
c)
Absorbed
d)
Optical Density
11.

Is this a reflection over the x-axis or y-axis

a)

X-axis

b)

Y-axis

12.

Is this a reflection over the X-axis or Y-axis

a)

X axis

b)

Y axis

13.
We see a green shamrock as being green because:
a)
All of the colors are absorbed except for green.
b)
All of the colors are being reflected except for green.
14.
Angles are always measured from the:
a)
Boundary
b)
Normal
c)
Incident Ray
d)
Reflected Ray
15.
The diagram displayed shows a plane mirror reflecting a laser beam. θi is 42 degrees. What is θr?
a)
21 degrees
b)
42 degrees
c)
48 degrees
d)
84 degrees
16.

The picture shows which type of reflection?

a)

Specular

b)

X-ray

c)

Diffuse

d)

Normal

17.

A ray of light is incident on a plane mirror and the angle of incidence is 25 degrees. What is the angle of reflection?

a)

A. 0 degrees

b)

B. 50 degrees

c)

C. 90 degrees

d)

D. 25 degrees

18.

Given that the angle of incidence = 30 degrees


Which is the correct diagam?

a)

A

b)

B

c)

C

d)

D

19.

What word is used to describe light as it strikes a smooth, shiny surface and bounces off?

a)

shadow

b)

energy

c)

reflection

d)

wave length

20.
Why can you see most objects? 
a)
they emit light
b)
light refracts through them
c)
light reflects off them
d)
They absorb light
21.
If the angle of incidence is 45 degree, what is the angle between the incident ray and reflecting surface
a)
45
b)
90
c)
180
d)
none of the above
22.

An object is placed 20 cm in front of a plane mirror. The mirror is moved 2 cm towards the object. The distance between the positions of the original and final images seen in the mirror is:

a)

2 cm

b)

4 cm

c)

10 cm

d)

22 cm

23.

A ray of light that strikes a plane mirror PQ at an angle of incidence of 30o, is reflected from the plane mirror and then strikes a second plane mirror QR placed at right angles to the first mirror. The angle of reflection at the second mirror is:

a)

30°

b)

45°

c)

60°

d)

90°

24.

An object is placed at 100 mm in front of a concave mirror which produces an upright image (erect image). The radius of curvature of the mirror is:

a)

Less than 100 mm

b)

Between 100 mm and 200 mm

c)

Exactly 200 mm

d)

More than 200 mm

25.

Which position of the object will produce a magnified virtual image, if a concave mirror of focal length 15 cm is being used?

a)

10 cm

b)

20 cm

c)

30 cm

d)

35 cm

26.

A ray of light is travelling in a direction perpendicular to the boundary of a parallel glass slab. The ray of light:

a)

Is refracted towards the normal

b)

Is refracted away from the normal

c)

Is reflected along the same path

d)

Does not get refracted

27.
What particles make up light?
a)
Photons
b)
Neutrons
c)
Protons
28.
Light behaves like both a particle and a ______.
a)
Mass
b)
Wave
c)
Current
29.

Focal length of plane mirror is

a)

At infinity

b)

Zero

c)

Negative

d)

None of these

30.

Image formed by plane mirror is

a)

Real and erect

b)

Real and inverted

c)

Virtual and erect

d)

Virtual and inverted

31.

A concave mirror gives real, inverted and same size image if the object is placed

a)

At F

b)

At infinity

c)

At C

d)

Beyond C

32.

Power of the lens is -40, its focal length is

a)

4m

b)

-40m

c)

-0.25m

d)

-25m

33.

In optics an object which has higher refractive index is called

a)

Optically rarer

b)

Optically denser

c)

Optical density

d)

Refractive index

34.

The optical phenomena, twinkling of stars, is due to

a)

Atmospheric reflection

b)

Total reflection

c)

Atmospheric refraction

d)

Total refraction

35.

Convex lens focus a real, point sized image at focus, the object is placed

a)

At focus

b)

Between F and 2F

c)

At infinity

d)

At 2F

36.

The unit of power of lens is

a)

Metre

b)

Centimetre

c)

Diopter

d)

M-1

37.

The radius of curvature of a mirror is 20cm the focal length is

a)

20 cm

b)

10 cm

c)

40 cm

d)

5 cm

38.

An object is placed 20 cm in front of a plane mirror. The mirror is moved 2 cm towards the object. The distance between the positions of the original and final images seen in the mirror is:

a)

2 cm

b)

4 cm

c)

10 cm

d)

22 cm

39.

A ray of light that strikes a plane mirror PQ at an angle of incidence of 30o, is reflected from the plane mirror and then strikes a second plane mirror QR placed at right angles to the first mirror. The angle of reflection at the second mirror is:

a)

30o

b)

45o

c)

60o

d)

90o

40.

A ray of light is travelling in a direction perpendicular to the boundary of a parallel glass slab. The ray of light:

a)

Is refracted towards the normal

b)

Is refracted away from the normal

c)

Is reflected along the same path

d)

Does not get refracted

41.

If an object is placed 21 cm from a converging lens, the image formed is slightly smaller than the object. If the object is placed at a distance of 19 cm from the lens, the image formed is slightly larger than the object. The approximate focal length of the lens is:

a)

20 cm

b)

18 cm

c)

10 cm

d)

5 cm

42.

A student does the experiment on tracing the path of a ray of light passing through a rectangular glass slab for different angles of incidence. He can get a correct measure of the angle of incidence and the angle of emergence by following the labelling indicated in figure:

a)

A

b)

B

c)

C

d)

D

43.

A student traces the path of a ray of light passing through a rectangular slab for three different values of angle of incidence (∠i ) namely 30o, 45o and 60o. He extends the direction of incident ray by a dotted line and measures the perpendicular distance ‘l’ between the extended incident ray and the emergent ray.


He will observe that:

a)

‘l’ keeps on increasing with increase in angle of incidence

b)

‘l’ keeps on decreasing with increase in angle of incidence

c)

‘l’ remains the same for all three angles of incidence

d)

‘l’ is the maximum for ∠i = 45o and is less than this value for ∠i = 30o and ∠i = 60o

44.

Which of the following mirror is used by a dentist to examine a small cavity?

a)

Convex mirror

b)

Plane mirror

c)

Concave mirror

d)

Combination of convex and concave mirror

45.

An object at a distance of 30 cm from a

concave mirror gets its image at the same point. The focal length of the mirror is

a)

– 30 cm

b)

30 cm

c)

– 15 cm

d)

+15 cm

46.

If a man’s face is 25 cm in front of concave shaving mirror producing erect image 1.5 times the size of face, focal length of the mirror would be

a)

75 cm

b)

25 cm

c)

15 cm

d)

60 cm

47.

The refractive index of water is 1.33. The speed of light in water will be

a)

1.33 × 108 m/s

b)

3 × 108 m/s

c)

2.26 × 108 m/s

d)

2.66 × 108 m/s

48.

You are given three media A, B and C of refractive index 1.33, 1.65 and 1.46. The medium in which the light will travel fastest is

a)

A

b)

B

c)

C

d)

equal in all three media

49.

The bending of light is called...

a)

a rainbow

b)

refraction

c)

reflection

d)

absorption

50.

which of the following is not a property of the image formed by a [lane mirror?

a)

virtual and erect

b)

Object size = image size

c)

object distance = image distance

d)

Real and inverted

51.

Which of the following is a concave mirror?

a)
b)
c)
d)
52.

which of the following ray diagrams is correct for the ray of light incident on a concave mirror as shown in the figure 10.6?

a)

A

b)

B

c)

C

d)

D

53.

Convex mirror is also called as

a)

converging mirror

b)

diverging mirror

c)

plane mirror

d)

silver mirror

54.

The relation between focal length and radius of curvature is

a)

R = 2f

b)

1/f = 2R

c)

f = R/2

d)

R = 2/f

55.

The point on the spherical mirror at the middle of the surface is called

a)

focus

b)

centre of curvature

c)

pole

d)

radius of curvature

56.

A convex mirror has a focal length 12 cm. Then its radius of curvature is ........ cm

a)

24

b)

12

c)

6

d)

1.2

57.

When the object is in between the centre of curvature (C) and focus (F) of a concave mirror, then the position of the image is ...........

a)

At focus

b)

At the centre of curvature

c)

at infinity

d)

beyond the centre of curvature

58.

Which mirror is shown in the figure?

a)

convex mirror

b)

concave mirror

c)

plane mirror

d)

silver mirror

59.

When the object is at infinity, a point sized image is formed at ................ by the convex mirror

a)

focus behind the mirror

b)

focus in front of the mirror

c)

radius of curvature

d)

principal axis

60.

The image formed by a concave mirror when the object is placed between the pole and the focus is ......

a)

virtual, erect and magnified

b)

virtual, erect and diminished

c)

real, inverted and magnified

d)

real, inverted and diminished

61.

The angle of incidence of a ray of light passing through the centre of curvature of a concave mirror is ........... degree

a)

105

b)

180

c)

90

d)

0

62.

Where will be the images of the Sun or the moon are formed by a concave mirror?

a)

Focus

b)

Pole

c)

centre of curvature

d)

beyond centre of curvature

63.

What is the size of the image formed when an object is kept at the focus in front of concave mirror?

a)

enlarged

b)

diminished

c)

highly enlarged

d)

highly diminished

64.
MCQ 018
What is the value of the unknown angle (theta) in the following diagram?
a)
A. 30 degrees
b)
B. 45 degrees
c)
C. 90 degrees
d)
D. 60 degrees
65.
Convex Mirrors produce...
a)
only virtual images
b)
virtual or real images
c)
only real images
d)
inverted images
66.

A mirror always form diminished image irrespective of the position of the object in-front of it , then the mirror is :-

a)

Plane mirror

b)

concave mirror

c)

convex mirror

d)

not possible

67.

When light goes from one material(medium) to another it becomes bent, what term means bent?

a)

reflected

b)

refracted

c)

absorbed

d)

turned

68.

Why does the straw appear to be bent?

a)

light is reflected

b)

light is absorbed

c)

light is turned

d)

light is refracted

69.

When light passes from air to water, what happens to the speed of the light?

a)

speeds up

b)

slows down

c)

stays the same

70.

Which of the following factors contributes to the bending of light?

a)

Change of speed of light

b)

Change of density of light

c)

Change of colour of light

d)

Change of energy of light

71.
Light has the lowest velocity in which medium?
flint glass n=1.70
barium glass n=1.60
crown glass n=1.523
water n=1.33
diamond n=2.45
a)
diamond
b)
water
c)
flint glass
d)
barium glass
72.

When the light passes out of the glass, back into the air

a)

It bends away from the normal

b)

It does not bend

c)

It bends towards the normal

d)

It continues to be the normal

73.
........... – the angle between the normal and the incident ray.
a)
Angle of incidence
b)
Angle of reflection
c)
Angle of coincidence
d)
Angle of direction
74.
How does light travel
a)
It curves around corners
b)
Really slow
c)
In a straight line
d)
In circles
75.

The angle of incidence for a ray of light having zero reflection angle is :-------

a)

00

b)

300

c)

450

d)

900

76.

The image formed by concave mirror is real, inverted and of the same size as that of the object. The position of object should be : ----------

a)

at the focus

b)

at the centre of curvature

c)

between focus and centre of curvature

d)

beyond centre of curvature

77.

An object at a distance of 30 cm from a

concave mirror gets its image at the same point. The focal length of the mirror is _________

a)

– 30 cm

b)

30 cm

c)

– 15 cm

d)

15 cm

78.

A virtual image formed by a mirror of an object which is less than the size of an object . Name the mirror_______

a)

Concave Mirror

b)

Convex Mirror

c)

Plane Mirror

d)

Both Concave and Convex

79.

The type of mirror used in reflector in automobile lights is

a)

Plane mirror

b)

Concave mirror

c)

Convex mirror

d)

None of the above

80.

A mirror having focal length –15 cm is _________________

a)

Plane mirror

b)

Concave mirror

c)

Convex mirror

d)

None of these

81.

Assertion: For observing the traffic at the hairpin bend in the mountains a plane mirror is preferred over convex or concave mirror.

Reason: A convex mirror has a much larger field view than a plane mirror or a concave mirror.

a)

Both Assertion and Reason are true and Reason is the correct explanation of Assertion.

b)

Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

c)

Assertion is true but Reason is false.

d)

Assertion is false but Reason is true.

82.

Which of the following characteristics are correct for the image formed in a plane mirror?


I. Upright

II. Inverted

III. Real

IV. Same size as the object

V. Virtual

a)

I, II, III

b)

I, III, IV

c)

I, IV, V

d)

III, IV, V

83.
How is light affected by an increase in the index of refraction?
a)
Its frequency increases
b)
Its frequency decreases
c)
Its speed increases
d)
Its speed decreases
84.

No matter how far you stand from a spherical mirror, your image appears erect. The mirror may be

a)

only plane

b)

only concave

c)

either plane or convex

d)

only convex

85.

A positive sign in the value of magnification indicates that the image is

a)

real

b)

virtual

c)

enlarged

d)

near

86.

A ray of light is travelling from a rarer medium to a denser medium. While entering the denser medium at the point of incidence, it

a)

goes straight into the second medium

b)

bends towards the normal

c)

bends away from the normal

d)

does not enter at all

87.

If the image is formed in front of the mirror, then the image distance will be

a)

positive or negative depending on the size of the object

b)

neither positive nor negative

c)

positive

d)

negative

88.

A spherical mirror and a thin spherical lens have focal length of −20 cm. The mirror and lens will be:

a)

both concave

b)

mirror is concave and lens is convex

c)

both convex

d)

mirror is convex and lens is concave

89.

A small air bubble in a glass block when seen from above appears to be raised because of

a)

refraction of light

b)

reflection of light

c)

reflection and refraction of light

d)

none of the above

90.

To get real magnified image in convex lens, the object position is

a)

in between lens and F

b)

in between F and 2F

c)

at 2F

d)

beyond 2F

91.

Centre point of a lens is called (a)  

92.
What is reflection?
a)
Reflection is the bouncing  of light off the surface that it strikes on.
b)
Reflection is the absorbing of light off the surface that it strikes on.
c)
Reflection is the bending of light off the surface that it strikes on.
d)
Reflection is the scattering of light off the surface that it strikes on.
93.
MCQ 08
If a capital letter R is seen in an ordinary mirror, what does it look like?
a)
A
b)
B
c)
C
d)
D
94.

A light ray is incident from water to air. Which of the refracted rays is correct?

a)

A

b)

B

c)

C

d)

D

95.

A mirror is titled at an angle of 20°. A light ray is incident at the surface of a plane mirror at an angle of 20°.


What is the angle of reflection?

a)

20°

b)

40°

c)

50°

d)

70°

96.

The diagram shows a patient having her eyes tested. A chart with letters on it is placed behind her and she sees the chart reflected in a plane mirror.


How far away from the patient is the image of the chart?

a)

2 m

b)

4 m

c)

5 m

d)

7 m

97.

Which block is made from the material with a refractive index of 1.52?

a)

A

b)

B

c)

C

d)

D

98.

Laws of reflection of light are similar to the laws of reflection of sound

a)

True

b)

False

99.

Which mirror is used as a make-up mirror ?

a)

Convex mirror

b)

plane mirror

c)

concave mirror

d)

plano-concave

100.
Real images are :
a)
Always inverted
b)
Magnified or Diminished
c)
can be obtained on screen
d)
all the above
101.

Which word means to bend light rays toward each other?

a)

Converging light

b)

Diverging light

c)

Virtual Light

d)

Real Light

102.

An object of size 5 cm is kept 20cm away from a concave mirror of focal length 15 cm . Size of its image shall be

a)

+ 5 cm

b)

- 10 cm

c)

- 15 cm

d)

- 5 cm

103.

Value of Magnification (m) of a mirror is always + 1 , then the mirror is definitely

a)

a concave mirror

b)

a plane mirror

c)

a convex mirror

d)

none of the above

104.

Value of Magnification (m) of a mirror is always + 1 , then the mirror is definitely

a)

a concave mirror

b)

a plane mirror

c)

a convex mirror

d)

none of the above

105.

What causes the formation of a rainbow?

a)

Light travels in a straight line

b)

Reflection of light

c)

Refraction of light

d)

Light in bounced in two different mediums

106.
Which of the following is NOT preserved with a reflection?
a)
Angle measurement
b)
Distance between points
c)
Orientation
d)
Shape
107.
Reflect (6, -3) over the line x-axis.
a)
(6, 3)
b)
(-6, -3)
c)
(-3, 6)
d)
(3, -6)
108.
Which of the following types of radiation has the shortest wavelength and the highest frequency?
a)
Radio Waves
b)
Infrared
c)
Visible
d)
X-Rays
109.

A real image having a size of 10 cm is formed by a concave mirror. The size of the object is 5 cm.The magnification of the object is

a)

-1/2

b)

1/2

c)

2

d)

-2

110.

An object is placed at a certain distance from a convex mirror. What is the possible magnification of the image of this object?

a)

+0.7

b)

+ 1.2

c)

-1.6

d)

-0.4

111.
What is the rule for the following reflection? 
a)
Reflection across       y = −1
b)
Reflection across        y = 1
c)
Reflection across            x = −1
d)
Reflection across          x = 1
112.

Reflections over the x-axis change the __________.

a)

y-coordinate

b)

x-coordinate

113.

The magnification produced by a convex mirror is always positive. This is because

a)

Convex mirror is a small mirror.

b)

Image formed by a convex mirror is always smaller in size than the object.

c)

Image formed by a convex mirror is real.

d)

Image formed by a convex mirror is always virtual and erect.

114.

In which of the following, the image of an object placed at infinity will be highly diminished and point sized?

a)

Concave mirror only

b)

Convex mirror only

c)

Plane mirror only

d)

Both plane and convex mirror

115.

A child is standing in front of a magic mirror. She finds the image of her head bigger, the middle portion of her body of the same size and that of the legs smaller. The following is the order of combinations for the magic mirror from the

top.

a)

Plane, convex and concave

b)

Convex, concave and plane

c)

Concave, plane and convex

d)

Convex, plane and concave

116.

The laws of reflection hold good for

a)

plane mirror only

b)

concave mirror only

c)

convex mirror only

d)

all mirrors irrespective of their shape

117.

Rays from Sun converge at a point 15 cm in front of a concave mirror. Where should an object be placed so that size of its image is equal to the size of the object?

a)

15 cm in front of the mirror

b)

30 cm in front of the mirror

c)

between 15 cm and 30 cm in front of the mirror

d)

more than 30 cm in front of the mirror

118.

A positive magnification greater than unity indicates

a)

real image

b)

virtual image

c)

neither real not virtual image

d)

distorted image

119.

An image that forms where light seems to come from a point but light rays don't actually meet is a

a)

virtual image

b)

real image

c)

inverted image

d)

clear image

120.

Light travels through air, water, glass and many other materials. What path does it travel to get from one place to another?

a)

sideways

b)

back and forth

c)

straight

d)

up and down

121.

Why doesn’t the surface of a wooden boat reflect light as the surface of water does?

a)

because the boat’s surface is rough and absorbs more light

b)

because the surface of the boat is red, not blue

c)

because the boat is not a natural object like the water is

d)

because the boat is on top of the water’s surface

122.
Material that allows light to pass through allowing you to see "clearly" to the other side
a)
opaque
b)
translucent
c)
transparent
123.
If light strikes a mirror at a 50⁰ angle, what angle will it come off of the mirror?
a)
50⁰
b)
70⁰
c)
45⁰
d)
30⁰
124.

Which is the right diagram for a translucent material?

a)
b)
c)
d)
125.

Which is the right diagram for an opaque material?

a)
b)
c)
d)
126.

Which one of these shows refraction?

a)
b)
c)
d)
127.

Which is the right diagram for a transparent material?

a)
b)
c)
d)
128.

When does refraction occur?

a)

Whenever light interacts with a material

b)

At the interface between two transparent materials

c)

At the interface between any two materials

d)

When light hits an opaque object

129.

Which of the following statements is not true?

a)

Objects that absorb light cannot transmit it

b)

We can only see objects that have reflected light

c)

Transparent objects transmit all light that reaches them

d)

Translucent objects can transmit light.

130.

When light passes from a less dense material to a more dense material (e.g. air to glass) light bends:

a)

Away from the normal

b)

Towards the normal

c)

Into the normal

d)

Away from the surface (reflects)

131.

An object at a distance of 30 cm from a concave mirror gets its image at the same point. The focal length of the mirror is

a)

-30cm

b)

30cm

c)

-15cm

d)

15cm

132.

The angle between incident ray and refracted ray on plane mirror is 700 ,the angle of incident is

a)

700

b)

350

c)

300

d)

200

133.

A concave mirror of focal length 20 cm forms an image having twice the size of object. For the virtual position of object, the position of object will be at

a)

25cm

b)

10cm

c)

40cm

d)

20cm

134.

. If a man’s face is 25 cm in front of concave shaving mirror producing erect image 1.5 times the size of face, focal length of the mirror would be

a)

75cm

b)

25cm

c)

150cm

d)

50cm

135.

As light travels from a rarer to a denser medium it will have

a)

increased velocity

b)

decreased velocity

c)

No change in velocity

d)

Non of the adove

136.

The angle of incidence i and refraction r are equal in a transparent slab when the value of i is

a)

00

b)

900

c)

450

d)

600

137.

The refractive index of transparent medium is greater than one because

a)

Speed of light in vacuum < speed of light in tansparent medium

b)

Speed of light in vacuum > speed of light in tansparent medium

c)

Speed flight in vacuum = speed of light in tansparent medium

d)

Frequency of light wave changes when it moves from rarer to denser medium

138.

The refractive index of glass is 1.5. The speed of light in glass will be ( speed of light in free space is 3x108m/s.)

a)

2x108m/s

b)

3.5x108m/s

c)

4.5x108m/s

d)

2.25x108m/s

139.

A divergent lens will produce

a)

always real image

b)

always virtual image

c)

both real and virtual image

d)

none of these

140.

Magnifying power of a concave lens is

a)

always > 1

b)

always << 1

c)

always =1

d)

can have any value

141.

. If the power of a lens is – 2 D, what is its focal length?

a)

-0.2m

b)

-100cm

c)

-50cm

d)

-0.5cm

142.

A full length image of a distant tall building can definitely be seen by using

a)

a concave mirror

b)

a convex mirror

c)

a plane mirror

d)

both concave as well as plane mirror

143.

A concave mirror produces a magnification of +4. The object is placed:

a)

At the focus

b)

Between focus and centre of curvature

c)

Between focus and pole

d)

Beyond the centre of curvature

144.

The magnification power of plane mirror

a)

one

b)

infinite

c)

less then one

d)

more then one

145.

An object is placed 20 cm in front of a plane mirror. The mirror is moved 5 cm towards the object. The distance between the positions of the object and final images seen in the mirror is:

a)

10 cm

b)

5 cm

c)

30 cm

d)

15 cm

146.

What is light? (Choose a complete answer)

a)

It´s a type of energy.

b)

It´s a form of energy that moves in straight lines.

c)

It travels in straight lines.

d)

It´s the sun.

147.

When you look at your face in a flat mirror, where does your face appear to be?

a)

A. an equal distance behind the mirror to what you are in front

b)

B. a long way behind the surface of the mirror

c)

C. on the surface of the mirror

d)

D. just in front of the mirror

148.
Convex mirrors can create real images.
a)
True
b)
False
149.

What is meant when we say light is transmitted?

a)

Light travels through something

b)

Light bounces off of something

c)

Light bends when it hits something

d)

Light is scattered

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