Question

The focal length of a concave mirror is 50 cm. To obtain an inverted image two times the size of the object, the object should be placed at : ​

Answer 1

Answer:

Given,

Focal length, f=50cm

Magnification, m=2

m=

u

v

=2

v=2u

From mirror formula,

f

1

=

v

1

+

u

1

f

1

=

2u

1

+

u

1

u=

2

3f

=

2

3×50

=75 cm

Object Is placed at 75cm from the mirror.