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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
- The fossil bone has a ¹⁴C:¹²C ratio, which is [1/16] of that in a living animal
- When ultraviolet rays are incident on metal plate, then photoelectric effect
- An open knife edge of mass 200g is dropped from height 5m on a cardboard
- The phase difference between the flux linked with a coil rotating in a uniform
- If sound wave travel from air to water, which of the following remains unchanged?
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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