Home Physics Communication System ( Not In Syllabus ) Communication A laser is a coherent source because it cont…
Physics Communication System ( Not In Syllabus ) Communication MCQ (Single Correct)

A laser is a coherent source because it contains

A
Many wavelengths
B
Uncoordinated wave of a particular wavelength
C
Coordinated wave of many wavelengths
D
Coordinated waves of a particular wavelength

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The correct answer is:
D

A laser produces light that is:

Coherent → Waves maintain a constant phase relationship (coordinated waves).

Monochromatic → Nearly a single wavelength.

Highly directional and intense.

Therefore, a laser is a coherent source because it contains coordinated waves of a particular wavelength.

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