The distance between a point source of light and a screen which is 60 – McqOptions

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1.	The distance between a point source of light and a screen which is 60 cm is increased to 180 cm. The intensity on the screen as compared with the original intensity will be [CPMT 1888]
A.	(1 / 9) times
B.	(1 / 3) times
C.	3 times
D.	9 times
Answer» B. (1 / 3) times

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