A convex lens can be fixed at two different positions between a burning candle and a screen so as to form sharp image of candle on the screen. If I_(1) and I_(2) be the size of the images respectively for the two positions of lens then the true size of the candle is given by

A convex lens can be fixed at two different positions between a burnin

1.	A convex lens can be fixed at two different positions between a burning candle and a screen so as to form sharp image of candle on the screen. If I_(1) and I_(2) be the size of the images respectively for the two positions of lens then the true size of the candle is given by
Answer» `(I_(1))/(I_(2))` `I_(1)xxI_(2)` `SQRT(I_(1)I_(2))` `(I_(2))/(I_(1))` Answer :C

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A convex lens can be fixed at two different positions between a burning candle and a screen so as to form sharp image of candle on the screen. If I_(1) and I_(2) be the size of the images respectively for the two positions of lens then the true size of the candle is given by

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