Answers

2016-03-17T19:10:48+05:30
Given u=10cm
r=8cm
so f=4cm
1/f=1/u+1/v
1/4=1/10+1/v
1/v=1/10-1/4
1/v=5-2/20
1/v=3/20
v=20/3
v=6.66cm
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