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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
- In a transistor, the value of βis 100, then the value of α will be
- The maximum particle velocity in a wave motion is half the wave velocity.
- A disc of radius 0.1 m is rotating with a frequency 10 rev/sec in a normal magnetic
- Pick out the correct statements from the following
- In an orbital motion, the angular momentum vector is
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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