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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
- If two vectors are equal in magnitude and their resultant is also equal in magnitude
- In Young’s double slit experiment, the slit seperation is 1 mm and the screen
- A parallel beam of light of wavelength λ is incident normally on a narrow slit
- If in a p-n junction, a square input signal of 10 V is applied as shown, then the output
- A p-n-p transistor is used in common emitter mode in an amplifier circuit.
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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