Question

A thin lens has a focal length of -25 cm. What is the power of the lens and what is its nature.

Answer 1

hey mate!!

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Power = 1/focal length (in m)

Or 100/f in cm

Here,

Power= 1/-25 =-0.04 Diopter

And that lens must be concave lens negative power itself shows.

Hope it will help you...✌️✌️

#phoenix

Answer 2

Heyy mate ❤✌✌❤

Here's your Answer.....

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Power = 1/ focal length

=> P = - 1/25.
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Since, It's focal length is negative.

Therefore, It is a concave Lens and it's nature is Virtual and Erect.
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