1000+ Physics Objective Questions and Answers Pdf - 2

Question: 6

Atomic power plant works on the principle of

(A) combined effect of all the three

(B) thermal combustion

(C) fusion

(D) fission

Question: 7

In photoelectric effect, the number of photo electrons emitted is proportional to

(A) work function of photo cathode

(B) velocity of incident beam

(C) frequency of incident beam

(D) intensity of incident beam

Question: 8

The heat transferred by the radiator of a refrigerator is

(A) the same as that at the freezer

(B) less than that at the freezer

(C) more than that at the freezer

(D) none of the above

Question: 9

The temperature of water at the bottom of a waterfall is higher than that at the top because

(A) falling water absorbs heat from the surroundings

(B) kinetic energy of falling water is converted into heat

(C) the surface at the boiling provides heat

(D) water at the bottom has greater potential energy

Question: 10

Longitudinal waves do not exhibit

(A) polarization

(B) diffraction

(C) reflection

(D) refraction