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Mayur Arya
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Asked: 2023-12-16T09:30:41+00:00 In:

A student has to project a three times magnified image of a candle flame on a wall. Name the type of the lens (converging/ diverging) required for the purpose. It the candle flame is at a distance of 6 m from the wall, find the focal length of the lens.

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    1. A student has to project a three times magnified image of a candle flame on a wall. Name the type of the lens (converging/ diverging) required for the purpose. It the candle flame is at a distance of 6 m from the wall, find the focal length of the lens.

      Here, m = – 3
      As image is formed on a wall, the lens should be converging
      As m = v/u = 3,
      Or, v = 3u in magnitude.
      Given, as candle flame is at distance of 6m from the wall,
      follow the image …..

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