A payable beam of light is focused at a distance of 10cm of a concave mirror. What is the focal length of a concave mirror.
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The focal length is 10cm..
because image is focused on 10cm from mirror.. so focus is 10 cm..
And its distance from pole is10 cm so focal length is 10cm
because image is focused on 10cm from mirror.. so focus is 10 cm..
And its distance from pole is10 cm so focal length is 10cm
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given:d=10x10^-2m,f=?
d=-1/f
f=-1/d
f=1/10x10^-2
=10^2/10
f=10m
d=-1/f
f=-1/d
f=1/10x10^-2
=10^2/10
f=10m
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