A parallel beam of light is incident from air at an angle α 𝛼 on the side of right angled triangular prism of refractive index μ = √2 𝜇 = 2 . Light undergoes total internal reflection in the prism at the face 𝑃𝑅 when 𝛼 has a minimum value of 45. The angle θ 𝜃 of the prism is. - VgyanHub

Question:

A parallel beam of light is incident from air at an angle α 𝛼 on the side of right angled triangular prism of refractive index μ = √2 𝜇 = 2 . Light undergoes total internal reflection in the prism at the face 𝑃𝑅 when 𝛼 has a minimum value of 45. The angle θ 𝜃 of the prism is.

Options :

(a) 15 degree
(b) 22.5 degree
(c) 30 degree
(d) 45 degree

Answer :

(a) 15 degree

Answer Steps :

step 1

step 2

Video Tutorial

Related Questions

An electron of mass (m) having de-Broglie wavelength ‘λe’ and a proton of mass (m) having de-Broglie wavelength ‘λp’ are accelerated through the same potential difference. The ratio of ‘λe’ to ‘λp’ is: [MHT-CET 2023]

The magnetic moment produced in a substance of 10^-3 kg is 5 × 10^−7A−m2. If its density is 6 X 10^3 kg/m^3, then the intensity of magnetisation in A/m will be :

In a photoelectric emission experiment, the stopping potential for a given metal is ‘V’ volt, when radiation of wavelength ‘λ’ is used. If radiation of wavelength ‘2λ,’ is used with the same metal, then the stopping potential (in volt) will be: [c = velocity of light, e = charge on electron, h = Planck’s constant] [MHT-CET 2023]

Explore Our Courses