Find the focal length of lens of power minus 0.2 what type of lens is this
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Answered by
2
As power is negative.
Focal length will be also negative.
So the lens used is CONCAVE.
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AarezKhan:
your answer is wrong
power is -0.2 and not -2
Answered by
2
1/focal length=power of lens
which implies,
1/-0.2=f
1/-1/5=f
f=5 metres
and it is a concave lens
which implies,
1/-0.2=f
1/-1/5=f
f=5 metres
and it is a concave lens
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