Question Detail

PHY 104 Reflection and Refraction of Light Objective Question

Question

Given that the speed of light (c) is approximately 3.00 x 108 m/s, what is the wavelength of a 60-Hz EM wave?
Options
A 5.0 x 10<sup>6</sup> m
Correct Answer
B 2.0 x 10<sup>-7</sup> m
C 1.8 x 10<sup>10</sup> m
D 5.0 x 10<sup>3</sup> m
Correct Answer

Option A is the correct answer.

Detailed Explanation

Using the formula c = λf (from page 3), we can solve for wavelength (λ): λ = c / f. Given c = 3.00 x 108 m/s and f = 60 Hz. λ = (3.00 x 108 m/s) / 60 Hz = 5.0 x 106 m.

Hint

Remember the formula c = λf and make sure to convert units if necessary (though Hz is already s-1).

Question Info