TNPSC Group 1, 2 Physics Study Material in English and Tamil - 3

Question: 11

Who studied the diffraction of X-rays?

(A) Laue

(B) Coolidge

(C) Roentgen

(D) W.L.Bragg and W.H.Bragg

Question: 12

According to electromagnetic theory, the vibrating electron ____

(A) Disturbs the stability of the atom

(B) Loses its mass

(C) Radiates energy

(D) Falls into the nucleus

Question: 13

An accelerating electron radiates energy at a frequency proportional to the ___ of the electron.

(A) Wavelength

(B) Velocity

(C) Angular velocity

(D) Mass

Question: 14

Canal rays travel in ____

(A) Curved paths

(B) Parabolic paths

(C) Straight lines

(D) Circular paths

Question: 15

The charge possessed by the canal rays is ___

(A) Neutral charge

(B) Negative charge

(C) Positive charge

(D) Both (a) and (b)