Question

An object is placed at 20 CM of a convex lens of focal length 30 cm find position nature and size of image

Answer 1

By1/f=1/u+1/v

1/−10=1/20+1/v

1/v=-3/20

So, v=−6.67cm

The image is behind the mirror and virtual.

By m=|v/u|

m=6.67/20