Question

Doctor advised to use 2D lens , then the focal length is

Answer 1

Answer:

the focal length is 2 please mark as brainlist answer

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Answer 2

Given that power of lens P= 2D

Using,

$p = \binom{100}{f \: } (in \: cm)$

$2 = \binom{100}{f}$

Therefore,

$f = \binom{100}{2}$

$= 50 \: cm$

The lens has focal length,f= 50 cm