Question

beam PQ is composed of rays corresponding to the wavelength of red,green and blue colour. for the material of the prism,the critical angle for yellow colour is 60 degree draw the diagram on answer sheet and complete the passage of ray of light.​

Answer 1

Answer:

Red rays will be transmitte

Solution :

As ABC is an isoceles right angled prism, angle of incidence of each ray is 45∘. If critical angle C is less than 45∘, the ray will be totally internally reflected at AC. When ∠C>45∘, the ray will be transmitted through the face AC.

For red ray, μ=1.39

sinC=1μ=11.39=0.719,C=46.0∘

∴ Red ray will be transmitted.

For green ray, μ=1.476,

sinC=1μ=11.424=0.702,C=44.6∘

∴ green ray will be reflected at face AC.

For blue ray, μ=1.476,

sinC=1μ=11.476=0.678,C=42.6∘

∴ Blue ray will also be reflected at face AC.

Answer 2

Answer:

Answer:

Red rays will be transmitte

Solution :

As ABC is an isoceles right angled prism, angle of incidence of each ray is 45∘. If critical angle C is less than 45∘, the ray will be totally internally reflected at AC. When ∠C>45∘, the ray will be transmitted through the face AC.

For red ray, μ=1.39

sinC=1μ=11.39=0.719,C=46.0∘

∴ Red ray will be transmitted.

For green ray, μ=1.476,

sinC=1μ=11.424=0.702,C=44.6∘

∴ green ray will be reflected at face AC.

For blue ray, μ=1.476,

sinC=1μ=11.476=0.678,C=42.6∘

∴ Blue ray will also be reflected at face AC.

Explanation:

Hope this answer will help you.✌️