Question

the object placed from of convex mirror is 3cm and the image distance is 6cm find the focal length ,nature and size​

Answer 1

Answer:

Given,

Height of object, h

0

=3cm

Object distance, u=7.5cm

Focal length, f=6cm

from mirror formula

f

1

=

v

1

+

u

1

6

1

=

v

1

−

7.5

1

v

1

=

6

1

+

7.5

1

v=3.33cm

magnification, m=

h

0

h

i

=−

u

v

⇒

3

h

i

=

−7.5

−3.33

⇒ h

i

=1.332cm

Image will be 3.33cm on the right side of the mirror and will be virtual.

Height of the image will be 1.332cm