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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
- A wire is suspended vertically from one of its ends is stretched by attaching a weight
- If threshold wevelength for sodium is 6800 Å, the work function will be
- The necessary condition in making of a junction transistor
- In a given process on an ideal gas, dW=0 and dQ<0. Then for the gas
- The heat dissipated in a resistance can be obtained by measuring of resistance,
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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