What will be the focal length of the lens combination when a lens of power 5D is kept in contact with a lens of power - 2D?
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total power=5D+(-2D)
power=3D
power=1/F
3=1/f
f=1/3
f=0.33metres.... hope this the correct answer..... do mark as brainliest
power=3D
power=1/F
3=1/f
f=1/3
f=0.33metres.... hope this the correct answer..... do mark as brainliest
Tuna123456:
45, 25, 33.3, 16.5
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