A ray of light passes normally through a slab of thickness t. IF the speed of light in vaccum be C, then time taken by the ray to go across the slab will be

A ray of light passes normally through a slab of thickness t. IF the s

1.	A ray of light passes normally through a slab of thickness t. IF the speed of light in vaccum be C, then time taken by the ray to go across the slab will be
Answer» `t/C` `(3t)/(2C)` `(2T)/(3C)` `(4T)/(9C)` Answer :B