The following items are positioned in sequence: A source of a beam of natural light of intensity I0, three ideal polarizers A, B, and C; and an observer
Polarizer axis angles are measured clockwise from the vertical, as viewed by the observer. The axis angle of polarizer A is set at 0° (vertical), and the axis angle of polarizer C is set at 50°. The axis angle of polarizer B is set at 120°. What is ratio of the intensity of the beam at the observer to the intensity I0 of the source?
A) 0.015
B) 0.020
C) 0.025
D) 0.030
E) 0.035
A
You might also like to view...
The size of a galaxy's central black hole is proportional to the mass of its disk
a. True b. False Indicate whether the statement is true or false
Atmosphere pressure on mars is roughly half that of Earth's at sea level
Indicate whether the statement is true or false.
Metal lids on glass jars can often be loosened by running them under hot water. Why is this?
a. The hot water is a lubricant. b. The metal and glass expand due to the heating, and the glass being of smaller radius expands less than the metal. c. The metal has a higher coefficient of thermal expansion than glass so the metal expands more than the glass, thus loosening the connection. d. This is just folklore.
Velocity: An airplane travels at 300 mi/h south for 2.00 h and then at 250 mi/h north for 750 miles. What is the average speed for the trip?
A. 260 mi/h B. 270 mi/h C. 275 mi/h D. 280 mi/h