A student directs a horizontal ray of monochromatic light normally into the vertical face of a right-angled isosceles glass prism with refractive index n=1.30n = 1.30n=1.30, surrounded by air. The ray travels straight through to the hypotenuse face at point MMM, as shown in the diagram below:
Which path correctly represents the subsequent trajectory of the light ray from point MMM?
Path A
Path B
Path C
Path D