Question

Find the power of a convex lens of focal length 0.50m

Answer 1

Answer:

Step-by-step explanation:

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Given focal lenth =0.50m

D(powr of lens)=1/f

Power of the lens=1

_____

0.50m

Powr of lens=100

____

50

Powr of the lens=2D

Power of the convex lens is 2diaoptre

Answer 2

Given - Focal length

Find - Power

Solution - The power of convex lens is reciprocal of focal length. Representing this in mathematical equation -

Power = $\frac{1}{focal length}$

Keep the values in formula to find the power of convex lens.

Power = $\frac{1}{0.5}$

Performing division

Power = ${2}$ D

Since the lens is convex in nature, hence, it's focal length and power will be positive.

Therefore, the power of convex lens is 2 D.