The energy required to ionize a hydrogen atom from the ground state is
A) 27.2 eV.
B) 13.6 eV.
C) 6.8 eV.
D) 3.4 eV.
E) infinite.
B
You might also like to view...
If you are measuring the mass of an elephant, the most appropriate SI unit is the
A) megagram. B) kilogram. C) gram. D) milligram. E) microgram.
Determine the potential difference Va ? Vb shown in the circuit below
a.
?5.0 V
b.
+5.0 V
c.
?10 V
d.
+10 V
e.
0 V
True or False: A photon is reflected from a mirror. Although the photon carries momentum, its change in momentum is zero when it reflects from the mirror, so it can't exert a force on the mirror
1.True 2.False
In a Young's double-slit interference apparatus, by what factor is the distance between adjacent light and dark fringes changed when the wavelength of the source is doubled?
a. 1/4 b. 1/2 c. 1 d. 2 e. 4