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- 1. Multiple Choice
Magnification produced by a rear view mirror fitted in vehicles
is less than one
is more than one
is equal to one
can be more than or less than one depending upon the position of the object in front of it
- 2. Multiple Choice
Which of the following can make a parallel beam of light when light from a point source is incident on it?
(a) Concave mirror as well as convex lens
(d) Concave mirror as well as concave lens
(b) Convex mirror as well as concave lens
c) Two plane mirrors placed at 90° to each other
- 3. Multiple Choice
A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is
30cm
20cm
60cm
40cm
- 4. Multiple Choice
Which of the following statements is true?
A convex lens has 4 dioptre power having a focal length 0.25 m
A convex lens has –4 dioptre power having a focal length 0.25 m
A concave lens has –4 dioptre power having a focal length 0.25 m
A concave lens has 4 dioptre power having a focal length 0.25 m
- 5. Multiple Choice
A beam of light is incident through the holes on side A and emerges out of the holes on the other face of the box as shown in the Figure 10.4. Which of the following could be inside the box?
concave lens
rectangular glass slab
prism
convex lens
- 6. Multiple Choice
You are given water, mustard oil, glycerine and kerosene. In which of these media a ray of light incident obliquely at same angle would bend the most
kerosene
water
mustard
glycerine
- 7. Multiple Choice
The path of a ray of light coming from air
passing through a rectangular glass slab
traced by four students are shown as A,
B, C and D in Figure 10.5. Which one of
them is correct?
- 8. Multiple Choice
shows a ray of light as it travels from medium A to medium B. Refractive index of the medium B relative to medium A is
√3 / √2
√2 / √3
1/ √2
√2
- 9. Multiple Choice
Under which of the following conditions a concave mirror can form an image larger than the actual object?
When object is kept at a distance greater than its radius of
curvature
When object is placed between the focus and centre of curvature
When object is kept at a distance less than its focal length
When the object is kept at a distance equal to its radius of
curvature
- 10. Multiple Choice
Beams of light are incident through the holes
A and B and emerge out of box through the
holes C and D respectively as shown in the Which of the following could be inside the box?
prism
rectangular glass slab
convex lens
concave lens
- 11. Multiple Choice
A light ray enters from medium A to medium
B as shown in The refractive
index of medium B relative to A will be
greater than unity
less than unity
equal to unity
zero
- 12. Multiple Choice
Which of the following ray diagrams is correct for the ray of light incident on a concave mirror as shown in the fig
- 13. Multiple Choice
A child is standing in front of a magic mirror. She finds the imageof 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.
Plane, convex and concave
Convex, concave and plane
Concave, plane and convex
Convex, plane and concave
- 14. Multiple Choice
In which of the following, the image of an object placed at infinity will be highly diminished and point sized?
Concave mirror only
Convex mirror only
Convex lens only
Concave mirror, convex mirror, concave lens and convex lens
- 15. Multiple Choice
A full length image of a distant tall building can definitely be
seen by using
concave mirror
convex mirror
plane mirror
both concave and plane mirror
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