ICSE Class 10 Physics 2014 Solved Paper
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Question : 40
Total: 66
The lens mentioned in 6(b) above is of focal length 25 cm . Calculate the power of the lens.
Solution:
Given : f = 25 cm = 0.25 m
Power of lens (in D)
=
=
=
= 4 D .
Power of lens (in D)
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