Question

a converging lens produce 3 times magnified image of an object on the screen and focal length will be 10 cm then where is the object place.​

Answer 1

Answer:

Magnification (m)=

u

−v

=

h

o

h

i

h

i

=3h

o

u

−v

=

h

o

3h

o

\\

u

−v

=3

−v=3u

v=−3×(−10)=30cm