# Lecturer Physics Test 27 Online Preparation MCQs Past Papers

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 Test Instructions:- Test Name Lecturer PhysicsÂ Subject Physics Test 27 Test Type MCQs Total Questions 25 Total Time 20 Minutes Total Marks 100
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You have 20 minutes to pass to the quiz.

PPSC Lecturer of Physics Test 27

1 / 25

A certain process produces mesons that decay with a lifetime of 6 Ã— 10âˆ’10 s. The decay is a result of:

2 / 25

Different types of neutrinos can be distinguished from each other by:

3 / 25

An example of a fermion is a:

4 / 25

A certain process produces baryons that decay with a lifetime of 4 Ã— 10âˆ’24 s. The decay is a result of:

5 / 25

A baryon with strangeness âˆ’1 decays via the strong interaction into two particles, one of which is a baryon with strangeness 0. The other might be:

6 / 25

A baryon with strangeness 0 decays via the strong interaction into two particles, one of which is a baryon with strangeness +1. The other might be:

7 / 25

In order of increasing strength the four basic interactions are:

8 / 25

A neutral muon cannot decay into two neutrinos. Of the following conservation laws, which would be violated if it did?

9 / 25

The interaction Ï€âˆ’ + p â†’ Kâˆ’ + Î£+ violates the principle of conservation of:

10 / 25

A positron cannot decay into three neutrinos. Of the following conservation laws, which would be violated if it did?

11 / 25

All leptons interact with each other via the:

12 / 25

All particles with spin angular momentum Â¯h/2:

13 / 25

A particle with spin angular momentum Â¯h is called a:

14 / 25

When a kaon decays via the strong interaction the products must include a:

15 / 25

Strangeness is conserved in:

16 / 25

Two baryons interact to produce pions only, the original baryons disappearing. One of the baryons must have been:

17 / 25

Which of the following particles is stable?

18 / 25

The stability of the proton is predicted by the laws of conservation of energy and conservation of:

19 / 25

An electron participates in:

20 / 25

Two particles interact to produce only photons, with the original particles disappearing. The particles must have been:

21 / 25

The interaction Ï€âˆ’ + p â†’ Ï€âˆ’ + Î£+ violates the principle of conservation of:

22 / 25

The two basic interactions that have finite ranges are:

23 / 25

A particle with spin angular momentum Â¯h/2 is called a:

24 / 25

An example of a boson is a:

25 / 25

A particle can decay to particles with greater total rest mass: