A ray of light travelling in glass $$($$μ $$=$$ $$3/2)$$ is incident on a horizontal $$glass-air$$ surface at the critical angle θc If a thin layer of water $$($$μ $$=$$ $$4/3)$$ is now poured on the $$glass-air$$ surface, the angle at which the ray emerges into air at the $$water-air$$ surface is

Question

A ray of light travelling in glass $$($$μ $$=$$ $$3/2)$$ is incident on a horizontal $$glass-air$$ surface at the critical angle θc If a thin layer of water $$($$μ $$=$$ $$4/3)$$ is now poured on the $$glass-air$$ surface, the angle at which the ray emerges into air at the $$water-air$$ surface is

Infinity Learn · Accepted Answer

μg $$sin$$ θ$$c=$$ μ$$1$$ $$sin$$ $$90$$° or                μg $$sin$$ θ$$c=1$$ When water is poured,                     μw $$sin$$ r $$=$$ μg $$sin$$ θc or                μw $$sin$$ r $$=$$ $$1$$ Again, μa $$sin$$ θ$$=$$μw $$sin$$ r or         μa $$sin$$ θ$$=1$$ or         Sin θ$$=1$$ or θ$$=90$$°

A ray of light travelling in glass ( $μ$ = 3/2) is incident on a horizontal glass-air surface at the critical angle $θ_{c}$ If a thin layer of water ( $μ$ = 4/3) is now poured on the glass-air surface, the angle at which the ray emerges into air at the water-air surface is

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A ray of light travelling in glass (μ = 3/2) is incident on a horizontal glass-air surface at the critical angle θc If a thin layer of water (μ = 4/3) is now poured on the glass-air surface, the angle at which the ray emerges into air at the water-air surface is

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material

A ray of light travelling in glass ( $μ$ = 3/2) is incident on a horizontal glass-air surface at the critical angle $θ_{c}$ If a thin layer of water ( $μ$ = 4/3) is now poured on the glass-air surface, the angle at which the ray emerges into air at the water-air surface is