WorksheetsLight 2
Total questions: 20
Worksheet time: 10mins
The diagram shows a single ray of light being directed at a plane mirror. What are the angles of incidence and reflection, respectively?
40o, 40o
40o, 50o
50o, 40o
50o, 50o
Which of the following diagrams show the correct ray diagram of how the submerged portion of the stick is observed in water?
A
B
C
D
The diagram below shows the path of a ray of light incident on the boundary between liquid and air. Given that the speed of light in air is 3.0 x 108 m/s, what is the speed of the light in the liquid?
2.2 x 108 m/s
2.7 x 108 m/s
3.4 x 108 m/s
4.0 x 108 m/s
Light is shone onto a transparent plastic block in air, as shown in the diagram. Which correctly identifies the angle of incidence and angle of refraction respectively?
e, g
e, h
f, g
f, h
A ray of light meets the face of a glass block at an angle of 30o as shown. The refractive index of the glass is 1.5. What is the angle of refraction r inside the glass block?
19o
20o
35o
40o
The diagram shows an object O placed in front of a plane mirror. Which is the image seen in the mirror?
A
B
C
D
A ray of light travels from vacuum into glass. What is the refractive index of the glass?
sin a/sin d
sin c/sin b
v1/v2
v2/v1
The diagram shows a ray of light reflected by a plane mirror. The diagram is not drawn to scale. What is the angle of reflection?
25o
35o
55o
70o
The diagram shows a ray of light incident to a glass block of refractive index 1.35 at an angle of incidence of 45o. What will happen to the light ray?
It will enter the glass block and bend away from the normal.
It will enter the glass block and bend towards the normal.
It will refract and travel along the air glass boundary.
It will undergo total internal reflection.
When a plane mirror is moved nearer to an object, how will the distance between the mirror and its image change?
It will increase
It will decrease
It will remain the same
It will increase and then decrease.
Light travels from one medium towards an optically less dense medium. It is refracted along the boundary between the media, as shown. What is the refractive index of the optically denser medium?
0.66
0.85
1.18
1.52
A ray of light is incident on one side of a rectangular glass block. Which path of light is not possible?
A
B
C
D
Four students are standing in front of a plane mirror at positions W, X, Y, and Z as shown below. How many of the four students can see the mirror image of the student at X?
0
1
2
3
The diagram shows an object viewed using two mirrors. A person looks into the mirrors as shown. What is the approximate position of the image as seen by the person?
A
B
C
D
Which row gives the descriptions of refractive index and critical angle?
A
B
C
D
The diagram shows a ray of light incident normally on the side PQ of a glass prism. The critical angle for a ray of light travelling from glass to air is 42o. What will happen to this ray?
It will be reflected from PQ at an angle of 45o.
It will travel through the prism, reflecting from QR and RP, before re-entering the air at PQ.
It will travel through the prism to QR, be reflected onto RP and then refracted into the air.
It will travel through the prism to QR and then be refracted into the air.
The diagram shows a right-angled prism being used to turn a ray of light through 90 o. What is the critical angle for the light in the glass?
less than 45o
equal to 45o
greater than 45o
equal to 90o
A patient stands in front of a mirror at a distance of 3.0 m for an eye check. A chart is placed at a distance 0.50 m behind him as shown in the diagram below. At what distance does the patient see the chart in the mirror?
3.5 m
6.0 m
6.5 m
7.0 m
A ray of light is incident on one side of a rectangular glass block. The angle of refraction is 40o in glass. The critical angle for light in glass is 42o Which diagram shows the path of this ray?
A
B
C
D
X, Y and Z are three right-angled triangular prisms made of different transparent materials. A monochromatic light ray incident normally at one face is found to undergo refraction and reflection as shown below. Which of the following is the correct order of the refractive indices of the prisms?
X > Y > Z
X > Z > Y
Y > Z > X
Z > Y > X
