Question

6) Power of a lens is +1D. What ia its focal length?​

Answer 1

Explanation:

The strength of the lens is the capacity of the lens to concentrate the rays that fall on it. Power of the lens is the ability of a lens to converge the rays falling on it. One dioptre is the power of the lens whose focal length is 1m.

Answer 2

Answer:

Diaoptre is the SI Unit of the power of a lens whose focal length is 1 metre. It is denoted by the letter D. Thus 1D = 1m - 1. Simply, when focal length ' f ' is expressed in metres, then, power is expressed in dioptres.

Explanation:

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