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    5. Calculate the speed of light in diamond if its refractive index is 2.4. (Speed of light = 3 × 10⁸

    Question

    Calculate the speed of light in diamond if its

    refractive index is 2.4. (Speed of light = 3 × 10⁸ m/s)
    A 1.25 × 10⁸ m/s Correct Answer Incorrect Answer
    B 2.5 × 10⁸ m/s Correct Answer Incorrect Answer
    C 1.75 × 10⁸ m/s Correct Answer Incorrect Answer
    D 3.0 × 10⁸ m/s Correct Answer Incorrect Answer

    Solution

    Speed = Speed of light in vacuum / Refractive index = (3 × 10⁸) / 2.4 ≈ 1.25 × 10⁸ m/s

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    Relevant for Exams:

    • AAI ATC JE

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