Question

Two thin lenses of focal lengths f₁ and f₂ are in contact and
coaxial. Its power is same as power of a single lens given by
(a) f₁ + f₂ (b) ⎷ f₁
f₁f₂ f₂
(c) ⎷ f₂ (d) f₁ + f₂
f₁ 2

Answer 1

Answer:

power of the lens is given by√f2

Answer 2

Explanation:

$power \: of \: lens \: is \: given \: by$

= √f2

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