Physics, asked by khushkhan8381, 1 year ago

Power of a lens is -4.0d. What is the focal length and nature of the lens?

Answers

Answered by sonaldureja1993

2

Answer:

f=-0.25 m and concave lens

Explanation:

p= 1/f

so f= 1/p= 1/(-4)= -0.25m

focal length is negative of concave lens

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