a ray of light passes normally through a slab of thickness t .if the speed of light in vaccume be c then time taken by the ray to go across the slab will be

Q. A ray of light passes normally through a slab $(\mu =1.5)$ of thickness ${}^{\prime }{t}^{\prime }$. If the speed of light in vacuum be ${}^{\prime }{c}^{\prime }$ then time taken by the ray to go across the slap will be

Q. The time taken by a ray of light to travel through a glass slab of thickness $2mm$ and refractive index $1.5$ will be

Q. A ray of light passes through a glass plate of thickness $t$ and refractive index $\mu$. If the speed of light in vacuum is $c$, then the time taken by light in passing through the plate will be

Q. A ray of light is incident normally on a glass slab of thickness $5$ cm and refractive index $1.6$. The time taken to travel by a ray from source to surface of slab is same as to travel through glass slab. The distance of source from the surface is :

Q. If a light ray, incident normally on two glass media such that the time taken to pass through the first slab is t1 and through the second slab is $t_2$, then find the value of $t_1/t_2$.