a spherical mirror and a spherical lens both have a focal length of -15 cm. identify the type of lens and mirror and justify your answer.

Asked by Shantanu | 12th Feb, 2012, 06:32: PM

Expert Answer:

since the focal length is negative i.e. f=-15 cm ,the spherical lens is concave lens  as the focal length is negative for diverging lens and in case of mirrors, it is convex mirror where the focal length is negative.

Answered by  | 12th Feb, 2012, 09:46: PM

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