TNPSC Physics Questions and Answers in English Pdf - 2

Question: 6

The part of electromagnetic waves that the human eye can detect is called

(A) Visible light

(B) X rays

(C) Infrared rays

(D) Ultra violet rays

Question: 7

The geometric centre of the lens is called

(A) Principal axis

(B) Optic centre

(C) Radius of curvature

(D) Centre of curvature

Question: 8

The binding force between the layers in graphite is

(A) Coordinate bond

(B) Ionic bond

(C) Covalent bond

(D) Vander Waal’s force

Question: 9

In a prism, the angle between the incident ray and the emergent ray is called

(A) Angle of incidence

(B) Angle of refraction

(C) Angle of deviation

(D) Angle of prism

Question: 10

Which of the following is not the use of graphite?

(A) used for cutting glass, marbles and rocks

(B) used as a lubricant

(C) used as a moderator in nuclear reactor

(D) used in making pencil lead