Find the focal length of a concave lens of power _2.5d
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Answered by
3
we know that p=1/f so, f=1/p =1/2.5=0.4
Hence, 0.4 is required focal length.
HOPE IT HELPS
Hence, 0.4 is required focal length.
HOPE IT HELPS
Answered by
9
power=1/focal length
-2.5 =1/f
f=1/-2.5
f=-0.4m
f=-40cm
hopefully it helps
mark as BRAINLIEST ⭐
-2.5 =1/f
f=1/-2.5
f=-0.4m
f=-40cm
hopefully it helps
mark as BRAINLIEST ⭐
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