Question

object is
3m
amy from wall
If any
concave
mirror makes
3 time
larger
image
on the wall. Then find
the focal length of mirror and distance of mirror from wall​

Answer 1

ANSWER

For Point A

f=10 cm

Object distance AB=5 cm

u=−25 cm

Now,

v

1

+

u

1

=

f

1

v

1

=−

−25

1

+

10

1

v=

7

50

cm

For point B

f=10 cm

u=−30 cm

Now,

v

1

=−

−30

1

+

10

1

v=

4

30

cm

Size of image AB =

4

30

−

7

50

=0.36 cm