General Science Questions and Answers for TNPSC - 2

Question: 6

Photoelectric cell is a device which converts

(A) light energy into electrical energy

(B) electrical energy into light energy

(C) kinetic energy into light energy

(D) mechanical energy into sound energy

Question: 7

The photoelectric effect can be explained on the basis of

(A) corpuscular theory of light

(B) quantum theory of light

(C) wave theory of light

(D) electromagnetic theory of light

Question: 8

Maximum kinetic energy of photo electrons varies linearly with _____ of incident radiation.

(A) wavelength

(B) velocity

(C) momentum

(D) frequency

Question: 9

In electron microscope, the electron beam emitted by the filament is accelerated through a large potential difference in a device called

(A) accelerator

(B) electron gun

(C) vandegraff generator

(D) cyclotron

Question: 10

Smaller the wavelength, greater is the ____ power.

(A) resolving

(B) penetrating

(C) diffusing

(D) magnetic