Question

Distance and wavelengths are proportional in a string when referring to the behavior of a particle.

(a) True

(b) False

This question was addressed to me during a job interview.

This question is from DE Broglie’s Explanation of Bohr’s Second Postulate of Quantisation topic in section Atoms of Physics – Class 12

Answer 1

The correct choice is (a) True

The best I can explain: Yes, this is a true statement. In a string, standing waves are formed only when the total distance traveled by a wave is an integral number of wavelengths. In this way, distance and wavelength are proportional to each other. Hence, the expression is given as:

2πrk = kλ