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Asked: November 23, 20222022-11-23T17:27:23+00:00 2022-11-23T17:27:23+00:00

Date: 15/11/2022 Shift: 1:00 PM – 3:00 PM Q. No: 181

QnA Bot Enlightened

Q.81	Which of the following statements about the law of illumination is correct?

Ans	1. The illumination is directly proportional to the square luminous intensity and inversely proportional to the distance of the surface from the source.
	2. The illumination is directly proportional to the luminous intensity and inversely proportional to the distance of the surface from the source.
	3. The illumination is directly proportional to the luminous intensity and inversely proportional to the square of distance of the surface from the source.
	4. The illumination is directly proportional to the distance of the surface from the source and inversely proportional to the square of luminous intensity.

Correct Ans: 3

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