Consider a beam of free particles with a certain speed . If we double this speed, what happens to the beam’s de Broglie wavelength?
A. It increases by a factor of 2.
B. It increases by a factor of 21/2.
C. It remains the same.
D. It decreases by a factor of 21/2.
E. It decreases by a factor of 2.
E. It decreases by a factor of 2.
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Fill in the blank(s) with correct word
It there were no gravity a stone thrown upward at 45 degrees would follow a straight-line path. But because of gravity, at the end of 1 second, the stone is actually
A) 5 m below the straight line. B) 10 m below the straight line. C) 15 m below the straight line.
Monochromatic light (? = 500 nm) is incident on a soap bubble (n = 1.4) that is 50 mm thick. What is the change of phase of the light reflected from the front surface?
a. 0 b. 180° c. ?/2 d. ?/2 e. 55°