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Time taken by light to cross a glass slab of thickness 4 mm and refractive index 3 is
Options
(a) 4×10⁻¹¹ sec
(b) 2×10⁻¹¹ sec
(c) 16×10⁻¹¹ sec
(d) 8×10⁻¹¹ sec
Correct Answer:
4×10⁻¹¹ sec
Explanation:
t = μx / c = (3 × 4 × 10⁻³) / (3 × 10⁸) = 4 x 10⁻¹¹ sec
Related Questions: - A gas is suddenly expanded such that its final volume becomes 3 times
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Topics: Wave Optics
(101)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A gas is suddenly expanded such that its final volume becomes 3 times
- The wavelength of kα, X-rays produced by an X-ray tube 0.76Å. The atomic number
- The moment of inertia of a thin circular disc about an axis passing through its centre
- In R-L-C series circuit, the potential differences across each element is 20 V.
- Two particles of masses m₁ m₂ move with initial velocities u₁ and u₂
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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