Light enters an isosceles right triangular prism at normal incidence through face AB and undergoes total internal reflection at face BC as shown below.
The minimum value of the refractive index of the prism is close to

A parallel beam of light is incident from air at an angle alpha on the side of right angled triangular prism of refractive index mu = sqrt(2) . Light undergoes total internal reflection in the prism at the face PR when alpha has a minimum value of 45^@ . The angle theta of the prism is. .

A parallel beam of light is incident from air at an angle alpha on the side of right angled triangular prism of refractive index mu = sqrt(2) . Light undergoes total internal reflection in the prism at the face PR when alpha has a minimum value of 45^@ . The angle theta of the prism is. .

A parallel beam of light is incident from air at an angle alpha on the side PQ of a right angled triangular prism of refractive index n=sqrt2 . Light undergoes total internal reflection in the prism at the face PR when alpha has a minimum value of 45^@ . The angle theta of the prism is

A parallel beam of light is incident from air at an angle alpha on the side PQ of a right angled triangular prism of refractive index n=sqrt2. Light undergoes total internal reflection in the prism at the face PR when alpha has a minimum value of 45degree . The angle theta of the prism is

A ray of light incident normally on an isosceles right angled prism travels as shown in the figure. The least value of the refractive index of the prism must be

A ray of light incident normally on an isosceles right angled prism travels as shown in the figure. The least value of the refractive index of the prism must be

A ray of ligh is incident normally on one of the faces of right angled isosceles prism as shhown above. It undergoes total internal reflection from hypotenuse. Which on of the following is the minimum refractive index of the material of the prism?

A ray of light normally on one of the faces of a right-angled isosceles glass prism is found to be totally reflected. What is the minimum value of the refractive index of the material of the prism ?

A ray of light incident normally on one face of a right isosceles prism is totally reflected. What must be the minimum value of refractive index of glass ? Give relevant calculations.

ABC is right angled prism kept in air. A ray (1) is incident on the face AB along the normal. Another ray (2) is incident on the face AB such that it emerges normally form the face AC. Then The minimum value of refractive index of the material of the prism for which the ray 1undergoes TIR on the face AC is