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[" 175.A converging beam of rays is inci...

[" 175.A converging beam of rays is incident on a "],[" diverging lens.Having passed through the lens "],[" the rays intersect at a point "15cm" from the lens "],[" on the opposite side.If the lens is removed the "],[" point where the rays meet will move "5cm],[" closer to the lens.The focal length of the lens "],[" is :- "],[[" (1) "5cm," (2) "-10cm],[" (3) "20cm," (4) "-30cm]]

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