Question

pls explain this question ! no spam ok !​

Answer 1

Answer:

Rba= sini/sinr

or Rba=velocity of light in med b/velocity of light in med a.

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Answer 2

Answer:

so here we have to tell that R.I(refractive index) of Medium B is greater or smaller than refractive index of Medium A

so obviously R.I of A > R.I of B

now this is because refraction takes palce when light is passed in denser medium from less denser medium and in Medium A light bends towards the transversal so it is denser one and refractive index is greater in denser medium.