Violet light with a wavelength of 430 nm falls on a sodium plate (W = 2.75 eV) and a potassium plate (W = 2.30 eV). Which of of the following statements is true?
A. Both plates emit electrons, but those emitted by the sodium plate have the larger kinetic energy.
B. Both plates emit electrons, but those emitted by the potassium plate have the larger kinetic energy.
C. Only the sodium plate emits electrons.
D. Only the potassium plate emits electrons.
E. Neither plate emits electrons.
B. Both plates emit electrons, but those emitted by the potassium plate have the larger kinetic energy.
You might also like to view...
How do we know that there is an insignificant amount of dark matter in our solar system?
What will be an ideal response?
Saturn's rings appear to be brighter and younger than the dirty, dark rings around Uranus and Neptune
Indicate whether the statement is true or false
Compton Scattering: A 29.0-pm-wavelength photon is scattered by a stationary electron. What is the maximum energy loss the photon can have? (melectron = 9.11 × 10-31 kg, c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J)
A. 4.0 keV B. 6.1 keV C. 10 keV D. 12 keV E. 15 keV
Earth circles the Sun in _____
A) 365.26 days B) 363.25 days C) 366.75 days D) 364.26 days