A ray of light travelling in transparent medium of refractive index $\mu$ falls on a surface separating the medium from air at an angle of incidence of ${45}^{\circ }$. For which of the following value of $\mu$ the ray can undergo TIR?

Q. A ray of light travelling in a transparent medium of refractive index $\mu$, falls on a surface separating the medium from air at an angle of incidence of ${45}^o$. For which of the following value of $\mu$ the ray can undergo total internal reflection?

Q. A ray of light travelling in a transparent medium of refractive index , falls on a surface separating the medium from air at an angle of incidence of ${45}^o$. For which of the following value of refractive index the ray can undergo total internal reflection :

Q. A ray of light travelling in a transparent medium falls on a surface separating the medium from air at an angle of incidence ${45}^o$ and undergoes total internal reflection. lf $\mu$ is the refractive index of medium the possible values of $\mu$ are

Q. A ray of light travelling in a transparent medium falls on a surface separating the medium from air at an angle of incidence 45${}^{\circ }$. The ray undergoes total internal reflection. The possible value of refractive index of the medium with respect to air is