Question

A.) A scuba diver, submerged under water, looks up and sees sunlight at an angle of 11.0° from the vertical. At what angle, measured from the vertical, does this sunlight strike the surface of the water? Assume water has a refraction index of 1.333.

B.) To focus a camera on objects at different distances, the converging lens is moved toward or away from the image sensor, so a sharp image always falls on the sensor. A camera with a telephoto lens (f = 400 mm) is to be focused on an object located first at a distance of 3.5 m and then at 50.0 m. Over what distance must the lens be movable?

C.) A layer of oil (n = 1.45) floats on an unknown liquid. A ray of light originates in the oil and passes into the unknown liquid. The angle of incidence is 55.0 degrees, and the angle of refraction is 59.1 degrees. What is the index of refraction of the unknown liquid?

D.) A ray of sunlight is passing from diamond into crown glass; the angle of incidence is 25.60°. The indices of refraction for the blue and red components of the ray are: blue (n_diamond = 2.444, n_{crown glass} = 1.531), and red (n_diamond = 2.410, n_{crown glass} = 1.520). Determine the angle between the refracted blue and red rays in the crown glass.

Answer 1