A fixed focus camera has a focal length of 35.0 mm.How far must the lens be moved in order to change focus from an object that is 20.0 m away to one that is 3.0 m away?
A) 0.34 mm
B) 0.41 mm
C) 0.35 mm
D) 0.47 mm

Question

Quizplus · Accepted Answer

A fixed focus camera has a fixed focal length, meaning that the distance between the lens and the image sensor is set at a specific distance for a specific focus. Therefore, the lens cannot be moved to change focus. Hence, the answer is none of the options given.

A Fixed Focus Camera Has a Focal Length of 35