Electricity and Magnetism Quiz Questions & Answers - 2

Question: 6

The fringes obtained in Newton’s rings experiment are

(A) circles with different centres

(B) cylindrical

(C) concentric circles

(D) elliptical

Ans: C

concentric circles

Question: 7

Variation in both electric and magnetic fields perpendicular to each other, produces _____ disturbance in space.

(A) gravitational

(B) electromagnetic

(C) magnetic

(D) electric

Ans: B

electromagnetic

Question: 8

Energy is emitted and absorbed in multiple of discrete packets of energy called

(A) corpuscles

(B) protons

(C) positrons

(D) quantum

Ans: D

quantum

Question: 9

Herapathite is a

(A) biaxial crystal

(B) uniaxial crystal

(C) refracting crystal

(D) polaroid

Ans: D

polaroid

Question: 10

The refractive index of the medium, for the polarising angle 60° is

(A) 1.5

(B) 1.414

(C) 1.468

(D) 1.732

Ans: D

1.732

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