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  4. If distance between light source and screen is doubled, then intensity of light will become

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Q. If distance between light source and screen is doubled, then intensity of light will become

MGIMS WardhaMGIMS Wardha 2012

Solution:

Intensity $ \propto \frac{1}{{{r}^{2}}} $ If distance is made double, then intensity becomes $ \frac{1}{4}th $ .