Question

The light of wavelength 6000 Aºis incident
normally on a plane parallel glass slab of
thickness 4 cm and u-1.5. The bearn takes
the same time to travel from the source to
the incident surface as it takes to travel
through the slab. Find the distance of the
source from the incident surface. What is the
frequency and wavelength of the light in glass?
s: 4000 AO​

Answer 1

Answer:

see down ⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇✅✅✅✅✅✅

Step-by-step explanation:

So for angles of incidence greater than 48.6-degrees, TIR occurs. But 48.6 degrees is the critical angle only for the water-air boundary. The actual value of the critical angle is dependent upon the two materials on either side of the boundary. For the crown glass-air boundary, the critical angle is 41.1 degrees.

1.8