[MCQ] Physics Objective Questions With Answer For WBCS Exam, Set 01

WBCS PHYSICS MCQ Q.1
Van-de-Graaff generator is used for

(A) accelerating charged particles
(B) generating large currents
(C) generating electric field
(D) generating high frequency voltage

Ans.(D)



WBCS PHYSICS MCQ Q.2
An artificial satellite orbiting around the earth does not fall down. This is so because the attraction of the earth

(A) does not exist at such distance
(B) is neutralized by the attraction of the moon
(C) provides the necessary speed for its steady motion
(D) provides the necessary acceleration for its motion


Ans.(D)



WBCS PHYSICS MCQ Q.3
The electric current density is

(A) a vector quantity
(B) a scalar quantity
(C) both
(D) none


Ans.(A)



WBCS PHYSICS MCQ Q.4
The surface of a lake is frozen in severe winter, but the water at its bottom is still liquid. What is the reason?

(A) ice is a bad conductor of heat
(B) since the surface of the lake is at the same temperature as the air, no heat is lost
(C) the density of water is maximum at 4°C
(D) none of the statements given above are correct


Ans.(C)



WBCS PHYSICS MCQ Q.5
Lumen is the unit of

(A) luminous intensity
(B) luminous flux
(C) both
(D) none


Ans.(B)



WBCS PHYSICS MCQ Q.6
Candela is the unit of

(A) luminous flux
(B) luminous effect
(C) luminous pressure
(D) luminous intensity


Ans.(D)



WBCS PHYSICS MCQ Q.7
Which one of the following pair does not have the same dimensions?

(A) force and pressure
(B) pressure and stress
(C) impulse and momentum
(D) work and energy


Ans.(A)



WBCS PHYSICS MCQ Q.8
The bodies executing free falling motion have

(A) equal momentum
(B) equal velocity
(C) equal acceleration
(D) equal force


Ans.(C)



WBCS PHYSICS MCQ Q.9
The increasing amount of carbon dioxide in the air is slowly raising the temperature of the atmosphere because it absorbs-

(A) the water vapour or the air and retains its heat
(B) the ultraviolet part of the solar radiation
(C) all the solar radiation
(D) the infrared part of the solar radiation


Ans.(D)



WBCS PHYSICS MCQ Q.10
A piece of ice is floating on the surface of the water kept in a beaker and when this piece melts then the level of the water in the beaker

(A) will increase
(B) will decrease
(C) will be same
(D) will firstly increase then it would decrease


Ans.(C)