Question

A large telephoto camera lens has a focal length of 0.545 m and an f-number of 8. determine the lens diameter.

A) 0.272 m
B) 1.090 m
C) 4.36 m
D) 8.72 m
E) 17.44 m

Answer 1

The lens diameter is approximately 6.81 cm.

Step-by-step explanation:

To determine the lens diameter, we need to use the formula for the f-number (f/#), which is the ratio of the focal length to the diameter of the lens.

We are given that the focal length is 0.545 m and the f-number is 8. Rearranging the formula, we have:

diameter = focal length / f-number

Substituting the given values, we get:

diameter = 0.545 m / 8

diameter = 0.068125 m

Therefore, the lens diameter is approximately 0.068125 m, or 6.81 cm.