PPSC Lecturer of Physics Online Test 31 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.

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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 31
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 31

1 / 25

The greatest binding energy per nucleon occurs for nuclides with masses near that of:

2 / 25

An alpha particle is:

3 / 25

A radioactive atom X emits a β particle. The resulting atom:

4 / 25

The half-life of radium is about 1600 years. If a rock initially contains 1 g of radium, the amount left after 6400 years will be about:

5 / 25

At the end of 14 min, 1/16 of a sample of radioactive polonium remains. The corresponding half-life is:

6 / 25

The relation between the disintegration constant λ and the half-life T of a radioactive substance is:

7 / 25

The half-life of a radioactive isotope is 140 days. In how many days does the decay rate of a sample of this isotope decrease to one-fourth of its initial decay rate?

8 / 25

65Cu can be turned into 66Cu, with no accompanying product except a gamma, if bombarded with:

9 / 25

The energies of electrons emitted in β decays have a continuous spectrum because:

10 / 25

Radioactive 90Sr has a half-life of 30 years. What percent of a sample of 90Sr will remain after 60 years?

11 / 25

Stable nuclei generally:

12 / 25

The half-life of a radioactive substance is:

13 / 25

210Bi (an isotope of bismuth) has a half-life of 5.0 days. The time for three-quarters of a sample of 210Bi to decay is:

14 / 25

Of the three common types of radiation (alpha, beta, gamma) from radioactive sources, electric charge is carried by:

15 / 25

In an alpha decay the disintegration energy appears chiefly as:

16 / 25

A nucleus with mass number A and atomic number Z undergoes β decay. The mass number and atomic number, respectively, of the daughter nucleus are:

17 / 25

The half-life of a given nuclear disintegration A → B:

18 / 25

Starting with a sample of pure 66Cu, 7/8 of it decays into Zn in 15 minutes. The corresponding half-life is:

19 / 25

Some alpha emitters have longer half-lives than others because:

20 / 25

A nucleus with mass number A and atomic number Z undergoes β+ decay. The mass number and atomic number, respectively, of the daughter nucleus are:

21 / 25

In addition to the daughter nucleus and an electron or positron, the products of a beta decay include:

22 / 25

A nucleus with mass number A and atomic number Z emits an alpha particle. The mass number and atomic number, respectively, of the daughter nucleus are:

23 / 25

A large collection of nuclei are undergoing alpha decay. The rate of decay at any instant is proportional to:

24 / 25

Beta particles from various radioactive sources all have:

25 / 25

A radium atom, 226Ra (Z = 86) emits an alpha particle. The number of protons in the resulting atom is:

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