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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
- Two metal spheres of radii 0.01m and 0.02m are given a charge of 15mC and 45mC
- A solid sphere, disc and solid cylinder all of the same mass and made up of same material
- If force(F), Velocity(V) and time(T) are taken as fundamental units, then the dimensions
- The phase difference between the instantaneous velocity and acceleration of a particle
- A capacitor is charged to 200 volt. It has a charge of 0.1 coulomb.
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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