Question

When the object is placed
between F and 2F in front of a
convex mirror then the
magnification produced by the
mirror is___
​

Answer 1

Answer:

Here,

Object distance, u=−2f

Image distance, v=?

From mirror formula,

v

1

+

u

1

=

f

1

v

1

+

−2f

1

=

f

1

v

1

=

2f

3

v=

3

2f

Now,

Magnification, M=

u

−v

=−

(−2f)

3

2f

=

3

1

(M is positive for convex mirror)

Answer 2

When an object is placed between F and 2F in front of a convex lens, the image formed is magnified, real, inverted and beyond 2F.