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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 coil of self-inductance L is connected in series with a bulb B and an AC source
- Which of the following combinations should be selected for better tuning of an L-C-R
- A body is hangfing from a rigid support by an inextensible string of length
- A body of mass 0.25 kg is projected with muzzle velocity 100 m/s from a tank
- When a magnet is taken towards a coil, the induced e.m.f. depends on
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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