Two thin lenses are in contact and the focal length of the combination is 80 cm. if f 1 = 20cm, what will be the power of the other lens?
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f1+f2=80
f2=80-f1
f2=80-20
f2=60cm
P=1/f
P=1/60
P=0.016
P=0.016*100(we r converting cm to m)
p=1.6Dm
hope it helps you
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f2=80-f1
f2=80-20
f2=60cm
P=1/f
P=1/60
P=0.016
P=0.016*100(we r converting cm to m)
p=1.6Dm
hope it helps you
plzzzzzzzz follow me
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