The Number of Photons Per Second Passing a Plane Perpendicular

question 21

Multiple Choice

The number of photons per second passing a plane perpendicular to a collimated monochromatic (one frequency) beam of light transporting power P is directly proportional to

• A) the wavelength of the light.
• B) the frequency of the light.
• C) the power of the beam.
• D) all of the above.
• E) only (a) and (c) above.