Use the following information to answer the next question.

In a Michelson-type experiment, the path followed by a beam of light when the 8-sided mirror is at rest is as shown below.The detector indicates a maximum signal.

As the 8-sided mirror begins to rotate, the beam of light no longer follows this path, and the detector indicates a decreased signal..

Note:This diagram is not drawn to scale.

Once the 8-sided mirror is rotating, the frequency of rotation for which the detector will first indicate a maximum signal is

Select one:

a.5.00 x 10³revolutions per second

b.1.25 x 10³revolutions per second

c.6.25 x 10²revolutions per second

d.1.00 x 10⁴revolutions per second