Question

Unpolarized light traveling through air is incident on a large slab of a transparent material 0.840 m thick, and it is found the reflected light is completely polarized. If the angle of incidence is $55.6^\circ$ , how long does it take for the refracted light to pass through the glass?

Answer is 4.96ns.

Please explain with great detail the steps and formulas used in words as well as mathematically.

Thank you!

Answer 1

Solution :- speed of light in ai ů (0 = 3x /o'mly Angle of Incidence (i) = 55.6 h =0.84om thickness of glass slabins d Refractive Inder af glass slabih= 1.52 refractive Index of ai (m) = 1.0003 applying Snell's law is n, sine= nSind (1.0003) Sin (55:6) = (1.52) Sinr 0.8254 Sina re Sint (0.54) h = See x = Sec (32.7) h = d (1.19) = (0.84) (1.19) = 0.9996m time taken (t) = distance travelled by light Insleb speed of light in slab 1.52 32.7° From trigonometry

ta 0.9996 m 1.52 3 x 108 s 3x108 m/s 1.52 0.507 X 10 sec