Question

The radius of a concave mirror is 8cm .Draw the ray diagram for an object placed on principal axis at 8cm and 4cm distance from the pole to the mirror.​

Answer 1

Answer:

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.

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Answer 2

Answer:

v=-40cm is correct answer