Question

Please provide an explanation for the answer, thank you!

A ray of light is incident at the center of the flat circular surface of a hemispherical glass object as shown in the figure. The refracted ray: Normal IncidentReflected ray I ray Wavefront Air Glass Interface Refracted rav A. does not emerge from the glass due to total internal reflection. B. emerges from the glass and continues in the same direction as the refracted ray because the beam is perpendicular to the glass-air surface where it emerges. C. is absorbed due to the difference in the indices of refraction between air and glass D. emerges from the glass bent at an angle θ2 with respect to its incident angle since the angle of incidence equals the angle of reflection. E. none of the above

Answer 1

B) emerges from the glass and continue in the same direction as the refracted ray because the beam is perpendicular to the glass-air surface where it emerges.

when ray incident at glass-air interface

theta_i = 0

so, theta_r = 0

so, the ray would emerge with out any deflection at glass-air interface.