A beam of light with a frequency range from 3.01 × 1014 Hz to 6.10 × 1014 Hz is incident on a metal surface. If the work function of the metal surface is 2.20 eV,
what is the maximum kinetic energy of photoelectrons ejected from this surface? (h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J)
A) 0.33 eV
B) 0.21 eV
C) 0.42 eV
D) 0.16 eV
E) 0.48 eV
A
You might also like to view...
Spherical Mirrors: An object that is 2.0 cm tall is placed at the center of curvature in front of a concave mirror. How tall is its image?
A. 0.50 cm B. 1.0 cm C. 1.5 cm D. 2.0 cm E. infinite
The first life to originate on Earth must be
A) at least as old as the oldest fossils B) exactly the same age as the oldest fossils C) younger than the oldest fossils D) much older than the oldest fossils
All planets rotate in the counterclockwise direction as seen from the north
a. True b. False Indicate whether the statement is true or false
When is the average velocity of an object equal to the instantaneous velocity?
A) only when the velocity is increasing at a constant rate B) only when the velocity is decreasing at a constant rate C) when the velocity is constant D) always E) never