Question

2o
centimetre ki Dori ke avtal Darpan Ke Samne Ek Vastu 3o c m ki Duri par rakhi hai pirtibimb ki position gyat kro
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Answer 1

f=-20cm, u=-30cm.

1/f=1/u +1/v

-1/20=-1/30+1/v

1/v=1/30-1/20

=(2-3)/60

v=-60cm(avtal darpan k samne)