Light, Reflection, Refraction GK, MCQs Quiz, Objective Questions | Online Test - 2

Question: 6

The line joining the centre of curvature of the two spherical surfaces is known as

(A) Principal axis

(B) Optic centre

(C) Focal length

(D) Principal focus

Question: 7

When magenta, yellow and cyan are added, the colour obtained is

(A) White

(B) Blue

(C) Green

(D) Red

Question: 8

The following is used in repairing watches

(A) Concave lens

(B) Compound microscope

(C) Astronomical telescope

(D) Simple microscope

Question: 9

The refractive index of a medium depends upon

(A) Nature of the material of the medium

(B) The angle of emergence

(C) The angle of refraction

(D) The angle of incidence

Question: 10

When a ray of light passes from a denser to rarer medium, the reflected ray is

(A) Returned

(B) Deviated towards the normal

(C) Deviated away from the normal

(D) Undeviated