Question

an object 4cm in height is placed 24 cm away from a concave mirror is 8cm draw a diagram on a graph paper and measure the position and height of the image find out the magnification also

Answer 1

Explanation:

Fromlensformulaeweget

f

1

=

v

1

−

u

1

f

1

+

u

1

=

v

1

Nowobjectdistancefromopticcentre=−8cm

andfocallength=10cm

v

1

=

10

1

−

8

1

v=−40cm

Since−vesigntheimagewillforminfrontofthelensandwillvirtual,enlargeanderect.