Question

Two sources of light are said to be coherent il' waves produced by them have the same
a) Wavelength b) amplitude c) wavelength and a constant phase difference d amplitude
and wavelength​

Answer 1

Answer:

Such sources are called coherent sources. As these sources are from a single original source, their frequency or wavelength will be the same. Thus, two sources of light are said to be coherent, when they give light waves of same wavelength and constant phase difference. So, option B is the correct answer.

Answer 2

Answer:

option B is the correct answer.

Explanation:

AMPLITUDE AND WAVELENGTH

The amplitude of a wave is the height of a wave as measured from the highest point on the wave (peak or crest) to the lowest point on the wave (trough). Wavelength refers to the length of a wave from one peak to the next. ... Wavelength is directly related to the frequency of a given wave form.

Hope it's helpful