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2015-10-25T15:37:01+05:30

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F = -15cm 
u=-30cm
v=?
1/f=1/u+1/v
1/-15=1/-30 +1/v
1/15-1/30=1/v
-2+1/30=1/v
-1/30=1/v
v=-30cm
 thank u and please comment for changes for better answer next time.....
2 5 2
thank u kvn murthy garu!! pleased to receive thanks from masters like u
2015-10-25T16:23:26+05:30
1/u+1/v=1/f
1/-30+1/v=1/-15
1/v=-2+1/30
v=-30cm
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