Chapter 12, Problem 37R

To determine

the term which best describes light from laser among the options such as (A) incoherent (B) coherent (C) incandescent (D) opaque.

Answer to Problem 37R

The correct option is (B).

Explanation of Solution

Introduction:

A laser beam produces coherent light through the process of stimulated emission of photons.

These photons emitted in laser beam light are all of same wavelength and are coherent which means all the photons are of same wavelength. Coherence is a unique property of laser light and it arises from the stimulated emission which provides amplification.

Conclusion:

Hence, the correct option is (B).