Polaroid sunglasses help when skiing on snow on a sunny day by reducing the sunlight from the snow. This light from the snow has been polarized by:
a. optical activity.
c. reflection.
b. selective absorption.
d. double refraction.
Question 2
An interval of one Celsius degree is equivalent to an interval of:
a. one Fahrenheit degree.
c. 5/9 Fahrenheit degree.
b. one kelvin.
d. 5/9 kelvin.
