The focal length of a concave mirror is 20cm. The power of the image is
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Answered by
7
hii frnd here is your answer.
focal length of a concave mirror = - 20cm
= -0.20cm
then ,
power = 1/ focal length
= 1/ -0.20
= - 5d
hope it will help you if it is right then mark as brainalist first
focal length of a concave mirror = - 20cm
= -0.20cm
then ,
power = 1/ focal length
= 1/ -0.20
= - 5d
hope it will help you if it is right then mark as brainalist first
satwik71:
yeah but its given in book
because concave power is always in negative sign
it can wrong
thanks
you can ask to your teacher
I m right
yes
mark as brainalist me
plz
ok
Answered by
8
the power of image =1/f
therefore
power =-1/20.
if my answer is helpful for you then please mark as brain liest
therefore
power =-1/20.
if my answer is helpful for you then please mark as brain liest
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