A person in a boat sees a fish in the water (n = 1.33), the light rays making an angle of 40° relative to the water's surface. What is the true angle (in degrees) relative to the water's surface of the same rays when beneath the surface?
a. 40
b. 35
c. 50
d. 55
e. 61
D
You might also like to view...
A nonprismatic cantilever beam of one material is subjected to load P at its free end. Moment of inertia I2 5 2I1. The ratio r of the deflection ?B to the deflection ?1 at the free end of a prismatic cantilever with moment of inertia I1 carrying the same load is approximately:
(A) 0.25
(B) 0.40
(C) 0.56
(D) 0.78
Your vision is sharpest when your pupil is
A) dilated. B) constricted. C) same either way
In a single-slit diffraction experiment, the angular width of the central maximum is 0.16°. The width of the slit is then doubled as is the distance to the screen. What is the resulting angular width of the central maximum?
a. 0.64° b. 0.080° c. 0.32° d. 0.16°
When charges qa, qb, and qc are placed respectively at the corners a, b, and c of a right triangle, the potential at the midpoint of the hypotenuse is 20 V. When the charge qa is removed, the potential at the midpoint becomes 15 V. When, instead, the charge qb is removed (qa and qc both in place), the potential at the midpoint becomes 13 V. What is the potential at the midpoint if both charges qa
and qc are removed? a. 13 V c. 5 V b. 7 V d. 8 V