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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
- A luminous object is seperated from a screen by distance d. A convex lens
- When photons of energy hν fall on an aluminium plate (of work function E₀),
- If two vectors 2i+3j+k and -4i-6j-λk are parallel to each other, then the value of λ is
- The length of an elastic string is a metre when the longitudinal tension is 4N and b
- A point charge q is placed at a distance x/2 directly above the centre of a cube
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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