Question

Power of a lens is -4.5. What will be its focal length?​

Answer 1

Answer:

hi I am Priyanshi

Explanation:

The power of a lens is the ability to converge or diverge the ray of light falling on it. The power of a lens is defined as reciprocal of the focal length of the lens. ... The power of the lens is 1 diopter if its focal length is 1 m. The power of the lens is 1 diopter if its focal length is 1 m.

Answer 2

Answer is here for u