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rajendra mhaske
from
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Subject :
IMO
Class :
Class 7
A
B
C
D
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1/u + 1/v =1/f => 1/u = 1/f - 1/v => 1/u = (v-f)/fv => u = fv/(v-f) Answer: B
Amit Malhotra
from
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Class :
Class 7
1/u + 1/v =1/f => 1/u = 1/f - 1/v => 1/u = (v-f)/fv => u = fv/(v-f) Answer: B
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