Physics, asked by hamedalshrif8216, 1 year ago

The focal length of a lens of power minus 4 d is

Answers

Answered by Nikhil1570

1

P = 1 / F

F = 1 / P

F = 1 / (-4)

F = - 0.25

the focal length of the lens is 25 cm or 0.25 meter negative sign shows that the lens is concave lens

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