Chapter 27, Problem 3Q

To determine

The statements that are true from the given, regarding a beam of red light and a beam of blue light having equal intensities

Answer to Problem 3Q

Solution:

There are more photons in the red beam.

Explanation of Solution

Given:

A beam of red light and a beam of blue light have equal intensities.

In general, as blue light have a higher frequency than of the red light; the individual photos of blue light have more energy than the individual photons of red light.

But in this case, a beam of blue light and a beam of red light having equal intensities possess the same energy. Therefore, the red light has more photons than blue light.

Therefore, there are more photons in the red beam.