Question

What is power of lens? If 5 lenses are combined ( kept in contact) then the
power of such lenses will be? How the power is related to focal length?
What will be the the focal length of 5 lenses be given by?​

Answer 1

The power of a lens is defined as the reciprocal of its focal length in meters, or D = 1/f, where D is the power in diopters and f is the focal length in meters. Lens surface power can be found with the index of refraction and radius of curvature.

Answer 2

Answer:

1) Power of lens can be defined as the reciprocal of focal length.

2) If 5 lenses are kept in contact (combined) the power of such lenses is the sum of the power of all 5 lenses.

3) Power of lens is reciprocal of focal length of the lens.

4) P = P1 + P2 + P3 + P4 + P5.

HOPE IT HELPS !!!!