TNPSC General Knowledge Study Materials, Notes in English - 2

Question: 6

At threshold frequency, stopping potential is

(A) zero

(B) infinity

(C) positive

(D) negative

Question: 7

The photoelectric emission is an _____ process.

(A) radioactive

(B) instantaneous

(C) spontaneous

(D) stimulated

Question: 8

Saturation current are proportional to _____ of the radiation.

(A) wavelength

(B) velocity

(C) intensities

(D) frequency

Question: 9

Newton's second law of motion is defines forces as rate of change of

(A) acceleration

(B) displacement

(C) momentum

(D) velocity

Question: 10

The stopping potential depends upon the _____ of the fastest electron.

(A) charge

(B) frequency

(C) wavelength

(D) velocity