Light MCQs with Answers

Question-1. A smooth shining surface, which rebounds the light back in same or in different direction, is called

1. point of incidence
2. a mirror
3. a lens
4. reflection of light

Question-2. An owl can see clearly at night but not day time because it has

1. Less rods and less cones
2. More rods and few cones
3. Less rod and more cones
4. More rods and more cone

Question-3. Band of seven colours is called

1. reflection
2. VIBGYOR
3. spectrum
4. dispersion

Question-4. Beam of light striking the reflecting surface is called

1. normal ray
2. reflecting ray
3. incident ray
4. refracted ray

Question-5. Front balged part of the eyeball is called

1. retina
2. cornea
3. choroid
4. pupil

Question-6. If light falls perpendicularly on a plane mirror, what will be the angle in which it will be reflected?

1. 360°
2. 45°
3. 90°
4. 180°

Question-7. If the angle of incidence of light falling on a plane mirror is 30°, what will be the angle of reflection?

1. 0°
2. 90°
3. 60°
4. 30°

Question-8. In case of reflection of light, the angle of incidence (i) and the angle of reflection (r) are related as

1. no definite relation
2. i = r
3. i < r
4. i > r

Question-9. In our eye _______ cells can sense colour

1. Neither rod nor cone
2. Rod
3. Cone
4. Both rod and cone

Question-10. In the retina of the eye, the area having no sensory cells is called

1. Dark spot
2. iris
3. Blind spot
4. cornea

Question-11. Light enters the eye through

1. retina
2. eye lens
3. pupil
4. cornea

Question-12. Light passing through a prism splits into seven colours. This is called

1. None of the above
2. Dispersion
3. Dissolution
4. Division

Question-13. Myopia can be corrected by using a

1. micro lens
2. concave lens
3. convex lens
4. opaque lens

Question-14. Name the type of mirror used as a backview mirror.

1. Any of these
2. Plane mirror
3. Concave mirror
4. Convex mirror

Question-15. Rainbow is a natural phenomenon showing

1. Diversion
2. Reflection
3. Deflection
4. Dispersion

Question-16. The amount of light entering the eye is controlled by

1. ciliary muscle
2. eye lens
3. cornea
4. iris

Question-17. The defect due to which a person is not able to see the distant objects clearly:

1. Cataract
2. Myopia
3. Hypermetropia
4. Cornea

Question-18. The image formed by a camera and a simple microscope are respectively

1. virtual and real
2. real and real
3. real and virtual
4. virtual and virtual

Question-19. The splitting of white light into its seven constituent colours is called

1. reflection
2. refraction
3. dispersion
4. deviation

Question-20. To make a kaleidoscope we require

1. Four glass sheets
2. Three plane mirrors
3. Four plane mirrors
4. Three glass sheets

Question-21. Visually impaired people can read and write using

1. hearing aids
2. electronic writer
3. digital pens
4. braille system

Question-22. What is the angle of incidence of a ray if the reflected ray is at an angle of 90° to the incident ray?

1. 180°
2. 60°
3. 45°
4. 90°

Question-23. When we stand in front of our dressing table, our left hand seems to be right and right seems to be left. This is called

1. mirage
2. Left-right confusion
3. Lateral inversion
4. Up -side down phenomenon

Question-24. Which of the following is not a luminous object?

1. Tube light
2. sun
3. candle
4. moon

Question-25. Which one of the following statements is correct regarding rods and cones in the human eye?

1. Rods can sense colour
2. Cones are sensitive to dim light
3. Cones are sensitive to bright light
4. Rods are sensitive to bright light