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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
- Two charges of equal magnitude q are placed in air at a distance 2a
- A metal wire of circular cross-section has a resistance R₁. The wire is now stretched
- According to Bohr model of hydrogen atom, only those orbits are permissible
- Water rises to a height h in a capillary at the surface of earth. On the surface
- In gamma ray emission from a nucleus
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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