(Assume all angles to be exact). Yellow-green light of wavelength 550nm in air i

Question

(Assume all angles to be exact). Yellow-green light of wavelength 550nm in air is incident on the surface of a flat piece of flint glass at an angle of 42 degrees. A) What is the angle of refraction of the light? (Express your answer as an integer) B) What is the speed of the light in the glass? v=m/s (Express your answer using three significant figures). C)What is the wavelength of the light in the glass? In nm (Express your answer using three significant figures) This problem has me so confused, please show all your work, Thank you.

Explanation / Answer

Refractive index of flint glass = 1.52 and for air n = 1.00

a) From Snell's Law we have n1*sin(1) = n2*sin(2)

so 2 = arcsin(n1/n2*sin(1))

= arcsin(1.00/1.52*sin(42)) =79.5o

b) n = c/v so v = c/n = 3.00x10^8m/s/1.52 = 1.97x10^8m/s

c) = o/n = 550nm/1.52 = 362nm

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