Consider an equilateral prism of refractive index μ. It is found that when light is incident at an angle 60∘, angle of emergence is ‘e’, while when light is incident at an angle 50∘, it undergoes TIR on the 2nd refracting surface. Choose the CORRECT options:-

For angle of incidence of 60∘ light emerges⇒ all rays having incident angle >60∘ will emerge.For angle of incidence of 50∘, light suffers TIR⇒ all rays having angle of incidence <50∘ will suffer TIR.For rays between 50∘ to 60∘ as angle of incidence, nothing can be commented.

Consider an equilateral prism of refractive index μ. It is found that when light is incident at an angle 60∘, angle of emergence is ‘e’, while when light is incident at an angle 50∘, it undergoes TIR on the 2nd refracting surface. Choose the CORRECT options:-

For angle of incidence of 60∘ light emerges⇒ all rays having incident angle >60∘ will emerge.For angle of incidence of 50∘, light suffers TIR⇒ all rays having angle of incidence <50∘ will suffer TIR.For rays between 50∘ to 60∘ as angle of incidence, nothing can be commented.

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Consider an equilateral prism of refractive index $μ$ . It is found that when light is incident at an angle $60^{\circ}$ , angle of emergence is ‘e’, while when light is incident at an angle $50^{\circ}$ , it undergoes TIR on the 2^nd refracting surface. Choose the CORRECT options:-

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A ray incident at an angle $65^{\circ}$ will surely emerge from other surface.

A ray incident at an angle $40^{\circ}$ will surely suffer TIR on other surface.

A ray incident at an angle ${50.7}^{\circ}$ , will surely suffers TIR on other surface.

A ray incident at an angle $59^{\circ}$ , may suffer TIR on the other surface

answer is A, B, D.

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Detailed Solution

For angle of incidence of $60^{\circ}$ light emerges
$\Rightarrow$ all rays having incident angle > $60^{\circ}$ will emerge.
For angle of incidence of $50^{\circ}$ , light suffers
TIR $\Rightarrow$ all rays having angle of incidence < $50^{\circ}$ will suffer TIR.
For rays between $50^{\circ}$ to $60^{\circ}$ as angle of incidence, nothing can be commented.