Loading [MathJax]/jax/output/HTML-CSS/jax.js
Home / Aptitude Tests / Physics / The image of an obje...

The image of an object is located 6cm behind a convex mir...

The image of an object is located 6cm behind a convex mirror. If it's magnification is 0.6, calculate the focal length of the mirror

A.

3.75cm

B.

6.70cm

C.

10.00cm

D.

-15.00cm

Correct answer is D

V = -6cm

M = 0.6cm

Recall m = VU

U = VM

U = 60.6

 U = 10

  1U + 1V = 1F

 11016 = 1F

460 = 1F

 F = 604

=  -15cm