Light MCQ Questions and Answers for Practice

1. The image in a convex mirror is always

1. virtual, erect and diminished
2. real,erect and magnified
3. real, erect and diminished
4. virtual, inverted and diminished

2. An example for non-luminous object is

1. Electric bulb
2. Candle
3. Sun
4. Moon

3. Light is a form of energy produced by a ____________

1. transparent object
2. opaque object
3. luminous object
4. non luminous object

4. When a plane mirror is rotated through an angle of 5 degree the reflected ray is rotated through on angle of

1. 2.5 degree
2. 50 degree
3. 5 degree
4. 85 degree

5. The phenomenon by which the incident light falling on a surface is sent back into the same medium is known as

1. polarization of light
2. absorbtion of light
3. reflection of light
4. refraction of light

6. The focal length of a spherical mirror is approximately equal to

1. twice the radius of curvature
2. equal to the radius of curvature
3. half the radius of curvature
4. four times the radius of curvature

7. When light is incident on a polished surface, then reflection takes place is

1. diffused
2. normal
3. regular
4. irregual

8. The focus of a concave mirror is

1. unidentified
2. at the pole
3. real
4. virtual

9. A virtual image larger than the object can be produced by a

1. plane mirror
2. convex mirror
3. concave lens
4. concave mirror

10. David is observing his image in a plane mirror. The distance between the mirror and his image is 4 m. If he moves 1 m towards the mirror, then the distance between David and his image will be

1. 6 m
2. 8 m
3. 3 m
4. 5 m

11. The rear view mirror of a car is a plane mirror. A driver is reversing his car at a speed of 2 m/s. The driver sees in his rear view mirror the image of a truck parked behind his car. The speed at which the image of the truck appears to approach the driver will be

1. 4 m/s
2. 8 m/s
3. 1 m/s
4. 2 m/s