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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
- For CE transistor amplifier, the audio signal voltage across the collector resistance
- The second overtone of an open pipe is in resonance with the first overtone
- If the feedback voltage is increased in a negative feedback amplifier, then
- A solenoid 1.5 m long and 0.4 cm in diameter possesses 10 turns per cm length
- Excitation energy of a hydrogen like ion, in its first excitation state, is 40.8 eV.
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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