Question

define the power of lens.

Answer 1

the power of lens it is drive by 1/ f

where is. f = focal length
and the si unit of lens is

diopter

Answer 2

✨✔️✔ ️HERE IS YOUR ANSWER...

✔ ️The power of lens is defined as the reciprocal of its focal length.

✔️ It is represented by the letter “P”.

✔ ️$p = \frac{1}{f}$

✔️ The SI unit of power of lens is “dioptre”.
• It is denoted by the letter “D”.
• 1 D is the power of a lens whose focal length is 1m.

✔️ Power of a convex lens is positive.

✔️ Power of a concave lens is negative.

✨✔️✔️ HOPE IT HELPS YOU....
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