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 Name Lecturer Physics 
Subject Physics Test 37
Test Type MCQs
Total Questions 25
Total Time 20 Minutes
Total Marks 100
0%

You have 20 minutes to pass to the quiz.


PPSC Lecturer of Physics Test 37

1 / 25

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

2 / 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:

3 / 25

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

4 / 25

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

5 / 25

The units of the Planck constant h are those of:

6 / 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:

7 / 25

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

8 / 25

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

9 / 25

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

10 / 25

Evidence for the wave nature of matter is:

11 / 25

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

12 / 25

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

13 / 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:

14 / 25

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

15 / 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:

16 / 25

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

17 / 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:

18 / 25

In a photoelectric effect experiment the stopping potential is:

19 / 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:

20 / 25

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

21 / 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

22 / 25

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

23 / 25

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

24 / 25

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

25 / 25

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

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