CBSE Class 10 Answered
numerical
Asked by | 28 May, 2009, 01:22: PM
Expert Answer
Magnification: v/u=0.25
v=0.25 u =0.5 m
We have: 1/f= 1/v-1/u=-1/0.5+1/2=-1.5
Hence f=-2/3 m
Clearly the lens is a concave lens having power 1.5 D.
Answered by | 30 May, 2009, 06:30: PM
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