Which of the following observations of the photoelectric effect are failed to be explained by wave model? (select all)
Quantum physics

Quiz
•
Physics
•
12th Grade
•
Hard
TL Cheng
Used 26+ times
FREE Resource
9 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
There is a minimum frequency of EM radiation required.
The maximum energy of photoelectrons depends on frequency.
The rate of emission of electrons depends on intensity.
The effect is instantaneous.
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A gamma-ray photon has energy 3 MeV. What is the frequency of this photon?
(h = 6.63×10−34 J s, e = 1.6×10−19 C, c = 3.0×108 m s−1)
7.2 × 1020 Hz
4.5 × 1039 Hz
3.2 × 10−46 Hz
1.4 × 1021 Hz
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is the correct formula for the momentum of a photon?
p=m/c
p=E/c
p=f/c
p=mv
4.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
The minimum energy of electromagnetic radiation required to release an electron from a metal surface is called _______.
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
UV light of wavelength 2 × 10−7 m falls on surface of gold. Work function of gold is 4.9 eV. What is the maximum energy of emitted electrons?
(h = 6.63×10−34 J s, e = 1.6×10−19 C, c = 3.0×108 m s−1)
1.3 eV
2.6 eV
3.9 eV
6.2 eV
6.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Line spectrum produced by a hot gas is called the ________ line spectrum.
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
How many different photons can be absorbed by an atom if the atomic electrons have 6 energy levels?
6
12
15
20
8.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the p.d. required to accelerate electrons from rest so that the electrons have a de Broglie wavelength of 4.0×10−10 m?
(e=1.6×10−19, me=9.11×10−31 kg, h=6.63×10−34 J s.)
9.4 V
4.9 V
5.7 × 1024 V
1.5 × 10−18 V
9.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What is the term used to describe the fact that particles can behave as waves and waves can behave as particles?
wave-particle disparity
wave-particle tranquality
wave-particle equality
wave-particle duality
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