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Light of wavelength λ from a point source falls on a small circular obstacle of diameter d. Dark and bright circular rings around a central bright spot are formed on a screen beyond the obstacle. The distance between the screen and obstacle is D. Then, the condition for the formaton of rings, is
Options
(a) √λ≈d/4D
(b) λ≈d²/4D
(c) d≈λ²/D
(d) λ≈D/4
Correct Answer:
λ≈d²/4D
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
- The temperature coefficient of a resistance wire is 0.00125 per degree.
- Two identical circular coils A and B are kept on a horizontal tube
- When you move from equator to pole, the value of acceleration due to gravity (g)
- If a mass of 20g having charge 3.0 mC moving with velocity 20ms⁻¹ enters a region
- Changing magnetic fields can set up current loops in nearby metal bodies
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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