According to the law of Malus, the transmitted intensity of a polarized beam of light passing through a polarizer is unchanged for an angle of 90°
Indicate whether the statement is true or false
FALSE
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This photograph, taken with a blinking strobe light, shows the path of a bouncing tennis ball. How could we make a similar photograph of the path of a bouncing electron?
A) We couldn't. An electron cannot have a well-defined path like a tennis ball. B) We'd need to use a strobe that emitted short wavelength x-rays rather than visible light. C) We'd need to view the electron through a powerful electron microscope. D) We'd need a strobe that blinked much faster, at least a trillion times per second.
In a double-slit experiment, the distance between the slits is 0.2 mm and the distance to the screen is 100 cm. What is the phase difference (in degrees) between the waves from the two slits arriving at a point 5 mm from the central maximum when the wavelength is 400 nm? (Convert your result so the angle is between 0 and 360°.)
A. 90° B. 180° C. 270° D. 360° E. 160°
At what angle will the highest-order maximum appear for a wavelength of 412 nm using a grating with 435 lines per mm?
a. 46° b. 64° c. 1.1° d. 68° e. 90°
Conservation of Momentum: A very elastic rubber ball is dropped from a certain height and hits the floor with a downward speed v. Since it is so elastic, the ball bounces back with the same speed v going upward. Which of the following statements about the bounce are correct? (There could be more than one correct choice.)
A. The ball had the same momentum just before and just after the bounce. B. The magnitude of the ball's momentum was the same just before and just after the bounce. C. The ball's momentum was conserved during the bounce. D. None of these statements are correct.