Question

Brainliest to correct answer
Calculate the focal length of a concave mirror whose image distance is 0.080m when the object distance is 0.25m.

Answer 1

Answer:

0.061m

Explanation:

Given the following

image distance v = 0.080m

Object distance u = 0.25m

For concave mirror, the image distance is positive

Using the mirror formula;

1/f = 1/u + 1/v

1/f = 1/0.25 + 1/0.080

1/f = 4 + 12.5

1/f = 16.5

f = 1/16.5

f = 0.061m

Hence the focal length of the mirror is 0.061m