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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
- Van der waals,equation of state is(p+a/v²)(V-b)=nRT. The dimensions of a and b
- A uniform electric field and uniform magnetic field are acting along the same
- A steady current is passing through a linear conductor of non-uniform cross-section.
- The value of workdone for rotating a magnet of magnetic moment M by an angle θ in external
- A bucket full of water is revolved in a vertical circle of 2m
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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