Chapter 25, Problem 10MCQ

Multiple Choice Questions

You have two green lasers, A and B. A’s light has twice the intensity of B’s. If c is the speed of light in air and E_max is the amplitude of the electric field in light, then which of the following statements are correct? Select all that apply.

a. $c_{\text{A}}=2c_{\text{B}}$ because the intensity of light is proportional to c.

b. $c_{\text{A}}=c_{\text{B}}$ because the speed of light in air is constant.

c. $E_{\max \text{A}}=2E_{\max B}$ because the intensity of light is proportional to E_max.

d. $E_{\max \text{A}}=\sqrt{2}{E}_{\max \text{B}}$ because the intensity of light is proportional to $E_{\max }^2.$

e. $E_{\max \text{A}}=4E_{\max \text{B}}$ because the intensity of light is proportional to $E_{\max }^2.$