Physics, asked by SuhaniMinal, 8 months ago

An object is placed 40cm from a concave mirror. If image formed is 24cm infront of the mirror, then the focal length of mirror is?

Answers

Answered by aaravshrivastwa
0

Image distance = v = -24 cm

Object distance = u = -40 cm

As we Know that By Mirror Formula,

1/v + 1/u = 1/f

-1/24 - 1/40 = 1/f

-5-3/120 = 1/f

-8/120 = 1/f

f = -120/8 cm

f = -15 cm

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