Question Detail

PHY 104 Reflection and Refraction of Light Objective Question
Take CBT

Question

What is the wavelength of a 93.3-MHz FM radio wave, assuming the speed of light is 3.00 x 108 m/s?
Options
A 3.22 m
Correct Answer
B 0.322 m
C 3.22 x 10<sup>6</sup> m
D 0.0322 m
Correct Answer

Option A is the correct answer.

Detailed Explanation

Using the formula c = λf (from page 3), we solve for wavelength (λ): λ = c / f. Given c = 3.00 x 108 m/s and f = 93.3 MHz = 93.3 x 106 Hz. λ = (3.00 x 108 m/s) / (93.3 x 106 Hz) ≈ 3.2154 m, which rounds to 3.22 m. This matches Example 31-3 (b) on page 5.

Hint

Don't forget to convert MHz to Hz before plugging into the formula.

Question Info

Course: PHY 104
Topic: Reflection and Refraction of Light
Type: Objective
Difficulty: Not specified
Question 11 of 947
Previous Course Details Next