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CBSE Class 10 Answered

A compound lens is made up of two lens in contact having powers +12.5D and -2.5D.One object is place
Asked by | 30 May, 2008, 08:27: PM
Expert Answer

use the formula  P = P1 + P2 , this will give you combined power

 P = 1/ f

now use the formula 1/f = 1/v - 1/u

use the above two formula considering sign convention.

Answered by | 16 Jul, 2008, 04:26: PM
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