Question

Assume now that you mistakenly filled the tank up to the blue line in the figure below. Using your ruler and protractor, draw the reflected and refracted rays for both incoming rays and read from the figure their angles (again, the red ray is 1 and the green one is 2) ang Note: the point of incidence is now where each ray crosses the blue line. The angles from the normal lines in those two points are those calculated in the previous page. The angles you read from the figure (L.e. from the protractor in the figure) are not. 畾 sa reflected eflected 2- refracted efracted

Answer 1

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{n_1 = 1 n_2 = 1.33 for reflected Rays: - theta_incidence = theta_reflected (theta will be calculated from Normal AB) fro Ray 1 theta_i = 30 degree = theta_gamma for Ray 2 theta_i = 70 degree = theta_gamma for Reflected Rays n_1 sin theta_1 = n_2 sin theta_2 {theta_1 is angle of n_1 side theta_2 is angle of n_2 side for Ray 1 n_1 = 1 rightarrow theta_1 = theta_i = 30 degree n_2 = 1.33 theta_reflected = ? rightarrow n_1 sin 30 degree = 1.33 sin theta_gamma 1 sin 30 degree = 1.33 sin theta_gamma rightarrow 0.5/1.3 = sin theta_gamma theta_gamma = sin^-1 (0.3759) rightarrow theta_gamma = 22.08 degree \r\n for ray 2: n_1 = 1, theta_1 = theta_i = 70 degree n_2 = 1.33 n_1 sin theta_i = n_2 sin theta_gamma rightarrow 1 sin 70 degree - 1.33 sin theta_gamma rightarrow 0.9397/1.33 = sin theta_gamma rightarrow theta_gamma = 44.95 degree theta_reflected 1 = 30 degree theta reflects d_2 = 70 degree

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