what type of image is formed on a cinema screen ??
A comcave mirror is part of sphere of radius 40cm .What is the focal length of the mirror.
chandan43:
real image
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2
Real image is formed on a cinema screen.
concave mirror = r/2 =40/2
= 20. cm
focal length is 20 cm.
concave mirror = r/2 =40/2
= 20. cm
focal length is 20 cm.
Answered by
8
In a cinema screen a real image is formed.
if the radius of a concave mirror = 40cm
it's focal lenght = radious/2
= 40/2
=20cm
HOPE THIS HELPS
if the radius of a concave mirror = 40cm
it's focal lenght = radious/2
= 40/2
=20cm
HOPE THIS HELPS
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