1. When an object is placed between two parallel mirrors, the number of images formed is
1) 2 2) 4 3) 8 4) Infinite
Ans: (4)
2. The focal length of spherical mirror is
1) maximum for red light 2) maximum for blue light
3) maximum for white light 4) same for all lights
Ans: (4)
3. Phase change in reflected wave, when light wave suffers reflection at the interface from air to glass is
1) 
2) 0 3) Π 4) 2Π
Ans: (3)
4. A plane mirror reflects a beam of light to form a real image. The incident beam is
1) Parallel 2) Divergent 3) Convergent 4) None
Ans: (3)
5. Which of the following is not the case with image formed by a plane mirror it is
1) erect 2) virtual 3) diminished 4) real
Ans: (3)
6. If an object is placed 10 cm in front of a convex mirror of focal length 20 cm, then the distance of image from the mirror is
1) 10 cm 2) 
cm 3) 
cm 4) 
cm
Ans: (2)
7. An unlit candle is 90 cm from a concave mirror of radius 60 cm. Where must a flame be put from the mirror, so that its image may be seen coming out of candle?
1) 20 cm 2) 10 cm 3) 30 cm 4) 45 cm
Ans: (4)
8. A ray deviates 90ºo after suffering reflection from a mirror. The angle of incidence is
1) 60º 2) 90º 3) 45º 4) 30º
Ans: (3)
9. An infinitely long rod lies along the axis of a concave mirror of focal length f. The near end of the rod is at a distance of u > f from the mirror. Its image will have a length
Ans: (2)
10. When an object is placed at a distance of 25 cm from a mirror, the magnification is m1. The object is moved 15 cm away with respect to earlier position magnification becomes m2. If 
then focal length of mirror is
1) 10 cm 2) 30 cm 3) 15 cm 4) 20 cm
Ans: (4)
11. A clock fixed on a wall shows time 04 : 25 : 37. Its image in a plane mirror shows
1) 07 : 43 : 32 2) 07 : 43 : 23 3) 07 : 35 : 23 4) 07 : 27 : 36
Ans: (3)
12. If p and q are distances of objects and real image from the principal focus of a concave mirror, then relation between p, q and f is
Ans: (3)
13. The plane mirror A and B are aligned parallel to each other as shown in figure. A light ray is incident at an angle of 30º at a point just inside end of 'A'. The plane of incidence coincides with the plane of figure. The maximum number of times the ray undergoes reflections (including first one) before it emerges out is
1) 30 2) 32 3) 28 4) 34
Ans: (1)
14. When a convex mirror of focal length 'f' produces an image (1/n)th of the size of the object, then the distance of the object from the mirror is
1) nf 2) f/n 3) (n + 1)f 4) (n - 1)f
Ans: (?)
15. An ant is moving towards a plane mirror with a velocity of 
m/s as shown in figure. Its image velocity with respect to the mirror is
Ans: (2)
