PPSC Lecturer of Physics Online Test 37 Past Papers

Online Free Taleem is free online MCQ’s test related to Lecturer Physics. All the individuals who are going to appear in Lecturer Physics written test can attempt these tests in order to prepare for it in best possible way. Our tests of Lecturer of Physics include all the important questions and Past Paper of  Lecturer Physics, that have extremely high amount of chances for been included in the actual exam which make our test undoubtedly the best source of preparation.

Note:-

There will be 25 multiple choice question in the test.
Answer of the questions will change randomly each time you start this test.
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Test Instructions:-
Test NameLecturer Physics 
SubjectPhysics Test 37
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 37

1 / 25

In Compton scattering from stationary electrons the frequency of the emitted light is independent of:

2 / 25

In a photoelectric effect experiment no electrons are ejected if the frequency of the incident light is less than A/h, where h is the Planck constant and A is:

3 / 25

The radial probability density for the electron in the ground state of a hydrogen atom has a peak at about:

4 / 25

The stopping potential for electrons ejected by 6.8×1014-Hz electromagnetic radiation incident on a certain sample is 1.8V. The kinetic energy of the most energetic electrons ejected and the work function of the sample, respectively, are:

5 / 25

Of the following, Compton scattering from electrons is most easily observed for:

6 / 25

Evidence for the wave nature of matter is:

7 / 25

In a photoelectric effect experiment at a frequency above cut off, the number of electrons ejected is proportional to:

8 / 25

Rank following electromagnetic radiations according to the energies of their photons, from least to greatest:
1. blue light
2. yellow light
3. x rays
4. radio waves

9 / 25

In Compton scattering from stationary particles the maximum change in wavelength can be made smaller by using:

10 / 25

Which of the following electromagnetic radiations has photons with the greatest energy?

11 / 25

Of the following which is the best evidence for the wave nature of matter?

12 / 25

Electromagnetic radiation with a wavelength of 5.7×10−12 m is incident on stationary electrons. Radiation that has a wavelength of 6.57 × 10−12 m is detected at a scattering angle of:

13 / 25

Which of the following electromagnetic radiations has photons with the greatest momentum?

14 / 25

In a photoelectric effect experiment at a frequency above cut off, the stopping potential is proportional to:

15 / 25

The units of the Planck constant h are those of:

16 / 25

Separate Compton effect experiments are carried out using visible light and x rays. The scattered radiation is observed at the same scattering angle. For these experiments:

17 / 25

The quantization of energy, E = nhf, is not important for an ordinary pendulum because:

18 / 25

Light beams A and B have the same intensity but the wavelength associated with beam A is longer than that associated with beam B. The photon flux (number crossing a unit area per unit time) is:

19 / 25

A photon in light beam A has twice the energy of a photon in light beam B. The ratio pA/pB of their momenta is:

20 / 25

In Compton scattering from stationary electrons the largest change in wavelength occurs when the photon is scattered through:

21 / 25

In a photoelectric effect experiment the stopping potential is:

22 / 25

The frequency of light beam A is twice that of light beam B. The ratio EA/EB of photon energies is:

23 / 25

Which of the following is NOT evidence for the wave nature of matter?

24 / 25

The wavelength of light beam B is twice the wavelength of light beam B. The energy of a photon in beam A is:

25 / 25

If h is the Planck constant, then ¯h is:

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