Time taken by light to cross a glass slab of thickness 4 mm and refractive index 3 is

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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:

1. In Young’s double slit interference experiment, using two coherent waves
2. Two positive ions, each carrying a charge q, are separated by a distance d
3. The charges Q, +q, and +q are placed at the vartices of an equilateral
4. The numebr 0 (zero) is required for
5. The distance travelled by an object along a straight line in time t is given by

Topics: Wave Optics (101)
Subject: Physics (2479)

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