A concave lens of focal length 15 cm forms an image 10cm from the lens.How far is the object placed

Asked by saikrish | 5th Apr, 2009, 05:11: PM

Expert Answer:

A concave lens only forms a virtual image, a virtual image is on the same side as the object.

Put v = -10cm f = -15cm into the equation 1/v -1/u = 1/f and solve for u.

Answered by  | 6th Apr, 2009, 09:49: AM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.