Time taken by sunlight to pass through a window of thickness 4 mm, whose refractive index is 3/2, is:
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Time taken by sunlight to pass through a window of thickness 4 mm, whose refractive index is 3/2, is:

G1 Physics · Accepted Answer

Step 1: Light speed in the glass: v = c/μ. Step 2: Time t = d/v = μd/c. Step 3: t = (1.5 × 4 × 10⁻³)/(3 × 10⁸) = 2 × 10⁻¹¹ s. Final answer: (C) 2 × 10⁻¹¹ s.