Light Lite -3

Classical Mechanics Level pending
  • A beam of light travelling in air enters into a liquid. Its speed reduces by 30%. The refractive index of liquid with respect to air is
  • if answer is in fraction then type sum of numerator and denominator.
  • LIGHT LITE -2


The answer is 17.

Razing Thunder by Razing Thunder , 16, India

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1 solution

n = Speed of light in vacuum Speed of light in medium = c 0.7 c = 10 7 ⟹ 7 + 10 = 17 n = \dfrac{\text{Speed of light in vacuum}}{\text{Speed of light in medium}} = \dfrac{c}{0.7c} =\dfrac{10}{7} \implies \boxed{7+10=17}

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