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In Young’s double slit experiment with sodium vapour lamp of wavelength 589 nm and the slits 0.589 mm apart, the half angular width of the central maximum is
Options
(a) sin⁻¹ 0.01
(b) sin⁻¹ 0.0001
(c) sin⁻¹ 0.001
(d) sin⁻¹ 0.1
Correct Answer:
sin⁻¹ 0.001
Explanation:
sin θ = λ / d
= 589 × 10⁻⁹ / 0.589 × 10⁻³ = 10⁻³ = 1 / 1000 = 0.001
Therefore, θ = sin⁻¹ 0.001
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Topics: Wave Optics
(101)
Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following quantities has units but not dimensions
- A magnetic force acting on a charged particle of charge -2µC in a magnetic field of 2T
- A bar magnet of moment of inertia I is vibrated in a magnetic field of induction
- Three cells, each of e.m.f 1.5 V and internal resistance 1 ohm are connected in parallel
- A particle moves a distance x in time t according to equation x = (t + 5)⁻¹
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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