Question

The refractive index of water will be (a) 1 (b) 2.66 (c) 5 (d) 1.33 This question was addressed to me by my school teacher while I was bunking the class. My question is from Refractive Index and Numerical Aperture topic in portion EM Wave Propagation of Electromagnetic Theory Select the correct answer from above options Electromagnetic Theory questions and answers, Electromagnetic Theory questions pdf, Electromagnetic Theory question bank, Electromagnetic Theory questions and answers pdf, mcq on Electromagnetic Theory pdf,electromagnetic theory book pdf,electromagnetic theory pdf notes,electromagnetic theory lecture notes,electromagnetic theory of light,maxwell electromagnetic theory,electromagnetic theory proposed by,electromagnetic theory engineering physics,electromagnetic theory nptel

Answer 1

Right choice is (d) 1.33 For explanation I would say: The velocity of light in water as medium will be 2.25 x 10^8. On substituting for the speed of light, we get refractive index as n = 3/2.25 = 1.33(no unit).