Question

The focal length of a concave lens 2 m. Calculate the power of the lens.

Answer 1

power of lens

Explanation:

#answerwithquality

#BAL

power of lens =1/F

P= 1/2= 0.5

Answer 2

Answer:

The power of the lens is the reciprocal of the focal length of the lens. We know that, The focal length is the negative for the concave lens. Hence, The power of the concave lens is -0.5 D.