If the critical angle for total internal reflection, from a medium to vacuum is `30^(@)`, then velocity of light in the medium is

If the critical angle for total internal reflection from a medium to vacuum is 30^(@) , the velocity of light in the medium is

If the critical angle for total internal reflection from a medium to vacuum is 30^(@) , the velocity of light in the medium is

If the critical angle for total internal reflection from a medium to vacuum is 30^(@) , the velocity of light in the medium is

If the critical angle for total internal reflection from a medium to vacuum is 45^@ , then velocity of light int he medium is,

If the critical angle for total internl reflection from a medium to vacuum is 30^@ then velocity of light in the medium is:

If the critical angle for total internal reflection from medium to vacuum is 30^@ , then what is the velocity of light in the medium ?