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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
- Electric field intensity at a point in between two parallel sheets due to like
- A particle starts its motion from rest under the action of a constant force
- The two ends of a metal rod are maintained at temperatures 100°C and 110°C.
- A neutron moving with velocity v collides with a stationary particle
- An object is 8 cm high. It is desired to form a real image 4 cm high at 60 cm from
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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