Physics, asked by thunderjk1321, 9 months ago

An object placed in 20cm from convex mirror its image is formed 12cm find its focal length

Answers

Answered by Naina3843

17

given

u= -20cm

v= 12cm

solution:

1/f. = 1/v. +1/u

1/f. = 1/12 - 1/20

1/f. =. (5-3) / 60

1/f. = 2/60

1/f. = 1/30

f = 30cm

Answered by Anonymous

0

Answer:

focal length = 30 cms ...............

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