Question

Which statement is false?

(A) Light is propagating in water (n=4/3) and strikes a water-air interface at an angle q to the normal where sin q =5/8; the light will be totally reflected back into the water.

(B) Mirages are a result of the fact that the surface of the ground is very hot in the desert. Specifically, the air near the ground is hotter and less dense. Consequently, light rays from a distant object will be refracted and bent upward so much that they will effectively appear to be reflected from a surface (i.e. like a water surface).

(C) Nikol Galiakberova is walking towards a flat mirror at 3 m/s. After 2 seconds, the distance between Nikol and her virtual image in the mirror will have decreased by 12 m.

(D) When held at a distance d from Brayden Vargas-Calderon’s face, a concave cosmetics mirror produces an enlarged image of his face that is not inverted. For Brayden to further increase the size of the image of his face, the distance d must be increased.

(E) Two slits, each of width a, are separated by a distance 1.5 a. The third interference maximum from the central maximum will be missing because it coincides with the second diffraction minimum