Question

If two light waves are coherent a) their amplitudes are the same their phase difference is constant their frequencies are the same b) c) d) their wavelengths are the san the difference in their frequencies is constant

Answer 1

a) their amplitudes are the same their phase difference is constant their frequencies are the same

Step-by-step explanation:

Coherent waves are the waves that have constant phase difference, equal frequency, amplitude and waveform.

Frequency denotes the number of cycles a wave completes in one second.

Amplitude is the maximum height that the wave reaches.

Waveform is the two dimensional representation of a wave in graphical form.