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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
- Mass and diameter of a ring is 2 kg and 1 m respectively. The moment of inertia
- A step-up transformer operates on a 230 V line and supplies a current of 2 A.
- A tuning fork of frequency x produces 4 beats with a source of 256 Hz and 8 beats
- The position x of a particle with respect to time t along x-axis is given
- The fundamental frequency of a closed organ pipe of length 20 cm is equal to the second
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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