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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 battery of emf 10 V and internal resistance 3 ohm is connected to a resistor.
- Rutherford’s ∝ particle experiment showed that the atoms have
- A wire of length 1 m is moving at a speed of 2 ms⁻¹ perpendicular to its length
- A spring gun of spring constant 90 N/cm is compressed 12 cm by a ball of mass
- A paramagnetic sample shows a net magnetisation of 0.8 Am⁻¹, when placed
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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