Question Detail

PHY 104 Reflection and Refraction of Light Objective Question

Question

According to the document (page 22), what is the relationship between the focal length (f) and the radius of curvature (r) for a spherical mirror?
Options
A <i>f</i> = 2<i>r</i>
B <i>f</i> = <i>r</i>
C <i>f</i> = <i>r</i> / 2
Correct Answer
D <i>f</i> = 1 / <i>r</i>
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 22 states: 'Using geometry, we find that the focal length is half the radius of curvature: f = r / 2.'

Hint

Remember how the focal point is defined in relation to the center of curvature for spherical mirrors.

Question Info