Question

if the focal length is 25cm and magnification is 0.5 find object distance​

Answer 1

Answer:

f=25

Explanation:

m=-0.5

1/f=1/v+1/u

1/25=1/v+[-1/0.5]

1/25=1/v-2

1/25+2=1/v

[25+50]/25

75/25=1/v

3=1/v

v=1/3