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- 1. Multiple Choice
The perpendicular drawn to the reflecting surface is called
reflected ray
dispersion
incident ray
normal
- 2. Multiple Choice
If two plane mirrors are inclined at an angle of 40°, number of images formed will be
9
8
6
5
- 3. Multiple Choice
Band of seven colours is called
spectrum
dispersion
VIBGYOR
reflection
- 4. Multiple Choice
Two mirrors A and B are placed at right angles to each other. A ray of light incident on mirror A at an angle of 25° falls on mirror B after reflection. The angle of reflection for the ray reflected from mirror B would be
25°
50⁰
115°
65°
- 5. Multiple Choice
A toy is placed at 10 cm in front of a plane mirror. What is the distance of image from the mirror?
10 cm
15 cm
30 cm
20 cm
- 6. Multiple Choice
The angle between the reflected ray and the normal at the point of incidence is called angle of incidence.
True
False
- 7. Multiple Choice
In mirror, the size of the image is the same as the size of the object.
True
False
- 8. Multiple Choice
Real images are formed on the screen.
True
False
Maybe
- 9. Multiple Choice
Rods are sensitive to bright light.
False
True
- 10. Multiple Choice
In bright light the size of the pupil is smaller.
True
False
- 11. Multiple Choice
Two persons on the surface of moon cannot talk to each other.
True
False
- 12. Multiple Choice
When lightning strikes, the sound is heard a little after the flash is seen.
True
False
- 13. Multiple Choice
The optical device used to see objects that are not along the line of sight is kaleidoscope.
False
True
- 14. Multiple Choice
Laws of reflection of light are two.
True
False
- 15. Multiple Choice
Second law of reflection states that angle of incidence is always equal to angle of reflection.
True
False
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