Question

A convex lens of focal length is 10cm ,Calculate its power​

Answer 1

Answer:

Explanation:power=1/focal length

1/0.1

10 diopter

Answer 2

The power of the convex lens is 10D.

• Given data :

The focal length of the given convex lens is 10 centimetres or 0.1 metres. (Term of unit conversion is 100 centimetres = 1 metre)

( We converted the centimetres into metre unit because metre is the SI unit of length and the rest of the calculations will be performed on the basis of SI units)

• Now,we have to calculate the power of the given convex lens by the help of the following mathematical formula :

Power of the lens = 1/focal length

= 1/0.1

= 10 D

So,the power of the given convex lens is 10D. (Here,the "D" is dioptre which is the SI unit of the power of a lens) [Answer]