explain the meaning of negative power and positive power.

Asked by sweetynam | 24th Jul, 2008, 09:23: PM

Expert Answer:

Power of a convex lens is positive power and power of a concave lens is negative power.

Answered by  | 25th Jul, 2008, 12:45: AM

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