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give the derivation of lens maker formula

Asked by Shahil(student) , on 2/11/14

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do you want the whole derivation or just the expression?

Posted by vidy_910(parent)on 24/9/10

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 hey give the whole derivation?

Posted by rohit_vm(student)on 7/10/10

 hey, d whole derivtion is in lesson 4.......see carefully.......

Posted by Aastha Khokhar(student)on 16/10/10

This is done basically taking angles and by using similar triangles..please refer ncert.

Posted by Saurabh(parent)on 3/11/14

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