Physics Gk Questions and Answers 2020-2021 - 3

Question: 11

Which of the following polymers is widely used for making bullet proof material?

(A) Polyamides

(B) Polyethylene

(C) Polyvinyl chloride

(D) Polycarbonates

Question: 12

Which one of the following is the correct combination of the inventors and the inventions?

(A) Sir Frank Whittle -->  Laser

(B) Elisha Thomson -->  Windmill

(C) J.L. Baird --> Television

(D) Galileo Galilei -->  Transistor

Question: 13

Study of Earthquakes is known as

(A) Numismatics

(B) Seismology

(C) Ecology

(D) None of these

Question: 14

The S.I. unit of electric flux is

(A) Nm²/coul²

(B) N coul/m²

(C) Nm²/coul

(D) None of these

Question: 15

Which of the following is a vector quantity?

(A) Moment of inertia

(B) Momentum

(C) Eenergy

(D) All of these