Hey answer the problem ................ needs the best answer only
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priyanshuanand1454:
hii
which ans sir
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your ans is in above attchement...pls ensure to check it...thnks for asking..
as you know by the formula that Power of lens is the reciprocal of focal length in metres.....
if u got the ans....mark me as brainellist..
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Answer: 1.ans. f=-18.18cm
2.ans. f=+66.66cm
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