TNPSC Electricity and Magnetism Questions and Answers - 1

Question: 1

_____ spectrum is used to analyse the chemical constitution.

(A) Absorption

(B) Raman

(C) Interference

(D) Emission

Ans: B

Raman

Question: 2

The angle of incidence for which the reflected ray is completely plane polarised is

(A) critical angle

(B) angle of polarisation

(C) angle of refraction

(D) angle of reflection

Ans: B

angle of polarisation

Question: 3

A changing magnetic field at a point with time produces an electric field. This idea was put forth by

(A) Oersted

(B) Huygen

(C) Maxwell

(D) Faraday

Ans: D

Faraday

Question: 4

In an electromagnetic wave,

(A) power is transmitted in a direction perpendicular to both the fields

(B) power is transmitted along electric field

(C) power is transmitted along magnetic field

(D) power is equally transferred along the electric and magnetic fields

Ans: A

power is transmitted in a direction perpendicular to both the fields

Question: 5

_____ is used to improve colour contrasts in old oil paintings.

(A) Pile of plates

(B) Nicol prism

(C) Polaroids

(D) None of the above

Ans: C

Polaroids

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