derive lens formula for lens having the power 5D magnification of -2
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1/v-1/u=1/f is the answer
keyuri23:
the question is to derive it
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lens is a defined as the reciprocal of its local length . If p is was the power of a lens of focal length f in metres.✔✔
1/v-1/u=1/f✔✔
.............
but I can't understand... ur question
thanks
1/v-1/u=1/f✔✔
.............
but I can't understand... ur question
thanks
f=20cm
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