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10th Class Science Human Eye and Colourful World Question Bank Light and Human Eye

  • question_answer
    Find the refractive index of a substance L. If the angle of incidence is \[72{}^\circ \] and the angle of refraction is \[90{}^\circ \]. (\[sin\text{ }72{}^\circ =0.951\])

    A) 1.48                             

    B) 0.951

    C) 1.951               

    D) 2.48

    E) None of these

    Correct Answer: B

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