Physical Optical Physics Multiple Choice Questions

1. When the interference of light was proposed:
(A) 1825
(B) 1830
(C) 1810
(D) 1805

2. X-rays were discovered in
(A) 1898
(B) 1900
(C) 1895
(D) 1880

3. Which one of the following is an example of a non-luminous object?
(A) The sun
(B) The moon
(C) Candle
(D) An electric bulb

4. A light detected by our color is…
(A) ROYGBIV, rainbow color form
(B) RGB form
(C) The simple form of a particular color
(D) None of these

5. Which of the following symbol is used to represent the speed of light in vacuum or air?
(A) a
(B) l
(C) v
(D) c

6. Convex mirror forms an image that is______
(A) Real, erect and magnified
(B) Virtual, real
(C) Virtual, erect and diminished
(D) Real and inverted

7. Which of the two types of lenses are correct?
(A) Living and non living
(B) Small and large
(C) Transpiring and respiring
(D) Converging and diverging

8. Radius of curvature is______
(A) 30 cm
(B) 45 cm
(C) 14 cm
(D) 8.5 cm

9. Which of the following is an example of a non-luminous object?
(A) Moon
(B) Sun
(C) Transparent
(D) Opaque objects

10. When a convex lens has a focal length of 20 cm, what is the power in dioptre?
(A) 4
(B) 6
(C) 0.5
(D) 5

11. What is the SI unit of power of a lens?
(A) cm
(B) dioptre
(C) watt
(D) meter

12. Convex lens is also called a____
(A) Diverging lens
(B) Refracting lens
(C) Converging lens
(D) Both A and C

13. How a virtual image is formed_____
(A) Telescope
(B) Simple microscope
(C) Slide projector in the cinema
(D) Ordinary camera