Free Printable Refraction Lenses Diffraction

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Refraction Lenses Diffraction

Total questions: 56

Worksheet time: 1hrs 19mins

Name

Class

Date

What type of lens is wider in the middle than on the edges?

Concave

Convex

Objective

Ocular

What type of lens is thinner in the middle than at the edges?

Convex

Concave

Objective

Magnifying

When light passes through a convex lens, it does this.....

Diverge, or spread apart

Converge, or come together

Reflect, or bounce off

Create a rainbow

Light bends as it passes through a lens. This is called what?

Reflection

Diffraction

Refraction

Dilation

What type of lens do you have in your eye?

Concave

Prismatic

Objective

Convex

A converging lens is also known as a ____ lens.

convex

concave

double

refracted

When an object is placed on the focal point in front of a convex lens, the image produced is ___.

real, reduced, and inverted

real, enlarged, and inverted

real, true, and inverted

There is no image

When an object is placed between the focal point and the convex lens, the image produced is ___.

real, reduced, and inverted

real, enlarged, and inverted

virtual, enlarged, and upright

virtual, reduced, and upright

___ is when light travels through a material and bends.

Diffraction

Dispersion

Mirage

Refraction

10.

The point where the rays meet is known as....

Fire

the focal point

refraction

Plane of the lens

11.

This image is...

Inverted and smaller

inverted and bigger

not inverted and smaller

not inverted and bigger

12.

Is a convex lens thicker or thinner in the middle?

Thicker

Thinner

13.

Glass has a _____________ index of refraction than air.

Equal

Greater

Less

Impossible to say

14.

Refraction occurs when _____________

the wave's speed changes by entering a new medium

a wave bounces off of a boundary

waves parts meet each other

waves bend around a barrier

15.

What is the ratio of the speed of light in a vacuum over the speed of light in a material?

index of refraction

critical angle

total internal reflection

aperture

16.

As light passes from air into water it ________________________.

speeds up

continues at the same speed

slows down

forms a mirage

17.

T or F? Because the light rays never meet, a concave lenses can produce only a virtual image.

True

False

18.

Which lens can produce a real image?

19.

Which lens always produces an image that is upright?

20.

Which lens can produce images that are either smaller or larger than the object?

21.

A ray of light in air is incident on an air-to-glass boundary at an angle of 30.0 degrees with the normal. If the index of refraction of the glass is 1.65, what is the angle of the refracted ray within the glass with respect to the normal?

Use Snell's law: $\left(n1\right)\left(\sin\theta1\right)=\left(n2\right)\left(\sin\theta2\right)$

56 degrees

46 degrees

30. degrees

18 degrees

22.

If the critical angle for internal reflection inside a certain transparent material is found to be 48.0 degrees, what is the index of refraction of the material? (Air is outside the material).

Use Snell's Law: $\left(n1\right)\left(\sin\theta1\right)=\left(n2\right)\left(\sin\theta2\right)$

1.35

1.48

1.49

0.743

23.

Which of the following statements are true of converging lenses?

Converging lenses are thicker at the center than they are at the edges

Converging lenses can produce images which are both magnified and reduced in size.

The images formed by a converging lens can be located on either side of the lens relative to the object.

All of these

24.

Which of the following statements are true of diverging lenses?

Diverging lenses only produce virtual images.

Diverging lenses only produce upright images.

Diverging lenses only produce reduced images.

All of these

25.

Which of the following statements are true of real images?

Real images are inverted.

Real images as formed by lenses are located on the opposite side of the lens from the object.

Real images are only formed by converging lenses, never by diverging lenses.

All of these

26.

Which of the following statements are true of virtual images?

Virtual images are always upright.

Virtual images as formed by lenses are always located on the same side of the lens as the object.

Virtual images can be formed by both converging lenses (when the object is inside of F) and diverging lenses (regardless of the object location).

All of these

27.

When light passes from air into a denser material it bends:

Towards the normal

Away from the normal

It is the normal

Keeps going straight

28.

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

It bends away from the normal

It does not bend

It bends towards the normal

It continues to be the normal

29.

The velocity of light in vacuum is _______ m/s

3x10⁸

3x10¹²

3x10⁶

3x10¹⁰

30.

What is this called?

refraction

reflection

reconstroction

retraction

31.

The formula to calculate the refractive index is

n=cv

n=v/c

n=c/v

v=nc

32.

A ray of light traveling from air into crown glass strikes the surface at an angle of 30.0 degrees. What is the angle of refraction? (air n=1, crown glass n=1.532)

39.7 degrees

19.2 degrees

59.1 degrees

12.3 degrees

33.

Glass has a _____________ index of refraction than air.

Equal

Greater

Less

Impossible to say

34.

The fact the two angles are the same is an example of....

Refraction

Angle of Incidence

Law of reflection

Magnification

35.

Light travels through a liquid at 2.25 x 10⁸ m/s. What is the index of refraction of the liquid?

1.33

1.0

1.523

2.45

36.

What is the index of refraction of a refractive liquid if the angle of incidence in the air is 35.0 degrees and the angle of refraction is 14.0 degrees?

1.33

2.21

2.37

1.72

37.

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

diamond

water

flint glass

barium glass

38.

Why does the lower part of the child appear so much different in size from the upper part?

The light rays that travel through water and then into air are refracted.

The light rays that travel through water and then into air are enlarged.

The light rays that travel through air and then into water are reflected.

The light rays that travel through air and then into water are reduced.

39.

What is B?

Angle of incidence

Angle of reflection

Incident ray

Reflected ray

40.

A converging lens has a focal length of 30.0 cm. A 5.0 cm tall candle is placed at a distance of 10.0 cm in front of the lens. Determine the image distance.

- 45 cm

-30 cm

-15 cm

6.0 cm

41.

An incident ray that is parallel to the principal axis...

will reflect parallel to the principal axis

will refract through the focal point

will reflect through the center of curvature

will continue along the same path through the lens

42.

Which is the angle of refraction?

Angle 1

Angle 2

43.

An object is located 15 m from a converging lens with focal length 10 m.If the object is 2 cm tall, find the image height if the image is located at 30 m.

4 m

-4m

-1m

44.

A converging lens has a focal length of 30 cm. A 5 cm tall candle is placed at a distance of 10 cm in front of the lens. Determine the image distance.

- 45 cm

-30 cm

-15 cm

6 cm

45.

Materials that have small critical angles are likely to cause most of the light entering them to be totally internally ____________

reflected

refracted

faster

slower

46.

What is the index of refraction of a material if light travels 2x10⁸m/s in it?

1.5

0.67

1.67

47.

which lens has a positive focal length?

concave

convex

48.

which lens has a negative focal length?

concave

convex

49.

name the case ?

nearsightedness

farsightedness

50.

name the case ?

nearsightedness

farsightedness

51.

how to correct nearsightedness

concave

convex

52.

how to correct farsightedness

concave

convex

53.

In which case will refraction be greatest?

light entering glass from water

light entering air from glass

light entering a diamond from air

light entering water from air

54.

What happens to the incident ray when it enters the second medium?

Does not change direction

Bends away from normal

Bends toward normal

55.

What happens to the incident ray when it enters the second medium?

Does not change direction

Bends away from normal

Bends toward normal

56.

A student is 2.50 away from a convex lens while her image is 1.80m from the lens. What is the focal length?

1.05 m

1.39 m

2.50 m

0.72 m

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Refraction Lenses Diffraction

Total questions: 56

Worksheet time: 1hrs 19mins

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