Light, Reflection, Refraction GK, MCQs Quiz, Objective Questions | Online Test - 1

Question: 1

This is used to see the lines of a person’s palm

(A) Astronomical microscope

(B) Compound microscope

(C) Lens

(D) Mirror

Question: 2

The total internal reflection prisms are used in

(A) Telescope

(B) Camera

(C) Simple microscope

(D) Periscope

Question: 3

In the human eye, the focal length of the lens is controlled by

(A) The pupil

(B) The ciliary muscles

(C) The iris

(D) The retina

Question: 4

Which of the following are primary colours?

(A) Violet, red and green

(B) Blue, cyan and magenta

(C) Red, green and blue

(D) Red, cyan and blue

Question: 5

The refracted ray just graces the surface of separation. In that case the angle of refraction is

(A) 45°

(B) 60°

(C) 90°

(D) 180°