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The focal length of the lens to be used to correct hypermetropia when the near point distance is “d” cm. 

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in Physics by (38.9k points)

The focal length of the lens to be used to correct hypermetropia when the near point distance is “d” cm. 

A) f = 25d/ (d – 25) 

B) f = -d 

C) f = (d-25)/ 25d 

D) f = 1/d

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1 Answer

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by (36.7k points)

A) f = 25d/ (d – 25)

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