PPSC Lecturer of Physics Online Test 36 Past Papers

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There will be 25 multiple choice question in the test.
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Test Instructions:-
Test NameLecturer Physics 
SubjectPhysics Test 36
Test TypeMCQs
Total Questions25
Total Time20 Minutes
Total Marks100
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You have 20 minutes to pass to the quiz.

You have 20 minutes to pass to the quiz.


PPSC Lecturer of Physics Test 36

1 / 25

Take the potential energy of a hydrogen atom to be zero for infinite separation of the electron and proton. Then the ground state energy is −13.6 eV. When the electron is in the first excited state the ionization energy is:

2 / 25

A particle in a certain finite potential energy well can have any of five quantized energy values and no more. Which of the following would allow it to have any of six quantized energy levels?

3 / 25

The Balmer series of hydrogen is important because it:

4 / 25

Take the potential energy of a hydrogen atom to be zero for infinite separation of the electron and proton. Then the ground state energy is −13.6 eV. The energy of the first excited state is:

5 / 25

The quantum number n is most closely associated with what property of the electron in a hydrogen atom?

6 / 25

A particle is trapped in an infinite potential energy well. It is in the state with quantum number n = 14. How many maxima does the probability density have?

7 / 25

An electron is in a one-dimensional well with finite potential energy barriers at the walls. The matter wave:

8 / 25

The series limit for the Balmer series represents a transition m → n, where (m, n) is:

9 / 25

The ground state energy of an electron in a one-dimensional trap with zero potential energy in the interior and infinite potential energy at the walls is 2.0 eV. If the width of the well is doubled, the ground state energy will be:

10 / 25

The binding energy of an electron in the ground state in a hydrogen atom is about:

11 / 25

The “e” in laser stands for:

12 / 25

Take the potential energy of a hydrogen atom to be zero for infinite separation of the electron and proton. Then the ground state energy of a hydrogen atom is −13.6 eV. When the electron is in the first excited state its excitation energy is:

13 / 25

A particle is confined to a one-dimensional trap by infinite potential energy walls. Of the following states, designed by the quantum number n, for which one is the probability density greatest near the center of the well?

14 / 25

The principle of complementarity is due to:

15 / 25

Take the potential energy of a hydrogen atom to be zero for infinite separation of the electron and proton. Then the ground state energy is −13.6 eV. The negative sign indicates:

16 / 25

Two one-dimensional traps have infinite potential energy at their walls Trap A has width L and trap B has width 2L. For which value of the quantum number n does a particle in trap B have the same energy as a particle in the ground state of trap A?

17 / 25

A particle is trapped in a one-dimensional well with infinite potential energy at the walls. Three possible pairs of energy levels are
1. n = 3 and n = 1
2. n = 3 and n = 2
3. n = 4 and n = 3
Order these pairs according to the difference in energy, least to greatest:1, 2, 3

18 / 25

The ground state energy of an electron in a one-dimensional trap with zero potential energy in the interior and infinite potential energy at the walls:

19 / 25

A particle is trapped in an infinite potential energy well. It is in the state with quantum number n = 14. How many nodes does the probability density have (counting the nodes at the ends of the well)?

20 / 25

An electron is in a one-dimensional trap with zero potential energy in the interior and infinite potential energy at the walls. The ratio E3/E1 of the energy for n = 3 to that for n = 1 is:

21 / 25

When a hydrogen atom makes the transition from the second excited state to the ground state (at −13.6 eV) the energy of the photon emitted is:

22 / 25

The wave function for an electron in a state with zero angular momentum:

23 / 25

A particle in a certain finite potential energy well can have any of five quantized energy values and no more. Which of the following would allow it to have any of six quantized energy levels?

24 / 25

A particle is trapped in a finite potential energy well that is deep enough so that the electron can be in the state with n = 4. For this state how many nodes does the probability density have?

25 / 25

A laser beam can be sharply focused because it is:

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