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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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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Dimensional formula of magnetic field in terms of mass M, length L
- Sand is being dropped on a conveyor belt at the rate of M kg/s. The force necessary
- Water flows through a pipe. The area of cross-section at one place A₁=10 cm²,
- A projectile is fired at 30°. Neglecting friction, the change in kinetic energy when
- If the error in the measurement of momentum of particle is (+100%)
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Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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