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A point source is kept at a distnace 1000m has an illumination I. To change the illumination to 16I, the new distance should become
Options
(a) 250 m
(b) 500 m
(c) 750 m
(d) 800 m
Correct Answer:
250 m
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Wave Optics
(101)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- what should be the velocity of an electron so that its momentum becomes equal
- A metal conductor of length 1m rotates vertically about one of its ends at angular
- The potential energy of a long spring when stretched by 2 cm is U.
- The wing span of an aeroplane is 20 m. It is flying in a field where the vertical
- In one dimensionsal motion,instantaneous speed v statisfies 0⦤v⦤vₒ
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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