Question

A lens has a focal length -10 CM what is the pider of lens and what is nature❓❓❓​

Answer 1

$f = - 10 \: cm \\ f = - 0.1 \: m \\ p = \frac{1}{f(m)} \\ p = \frac{1}{( - 0.1)} \\ p = 10 \: d$

Answer 2

Answer:

-10 D

Explanation:

since the focal length is negative, so the lens is concave

focal length, f = -10cm =0.10m

; power,

P=1 / f(in m) =1/-0.10m= -10 D