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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 spherical liquid drop of radius R is divided into 8 equal droplets. If the surface
- Two spherical nuclei have mass numbers 216 and 64 with their radii R₁ and R₂,
- The fluctuation in the input voltage of 200 V to a domestic circuit is +10V
- In radioactive element, β-rays are emitted from
- Two poles of same strength attract each other with a force of magnitude F
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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