PPSC Lecturer of Physics Online Test 42 Past Papers

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There will be 25 multiple choice question in the test.
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Test Instructions:-
Test Name Lecturer Physics 
Subject Physics Test 42
Test Type MCQs
Total Questions 25
Total Time 20 Minutes
Total Marks 100

You have 20 minutes to pass to the quiz.

PPSC Lecturer of Physics Test 42

1 / 25

Which law states that a musical sound is perceived by the ear as a set of a number of constituent pure harmonic tones?

2 / 25

What is a sequence of musical notes in ascending and descending order that provides material for representing musical work?

3 / 25

On which parameter, the path difference between two interfering waves depend upon?

4 / 25

Who developed gramophone is 1877?

5 / 25

As a man moves away form a steady source of sound at constant speed, the sound he hears will:

6 / 25

For how long the sensation of sound persists in our brain?

7 / 25

When wind blows in the same direction in which the sound travels, the sound velocity:

8 / 25

When the source and observer are moving away from each other the apparent pitch will:

9 / 25

Due to which reason, echoes arise?

10 / 25

Which analysis is employed to convert a complex sound into notes?

11 / 25

Which of the following is a mechanical wave?

12 / 25

Which of the following represents an elastic wave?

13 / 25

The beat frequency is the ................... of the two frequencies:

14 / 25

Which of the following is a conicalbore transposing musical instrument that is a member of the wood-wind family?

15 / 25

Which effect explains the frequency shift that occurs when there is motion of sound, a listener or both relative to the medium?

16 / 25

When the prong of a tuning fork is loaded with waxe, its frequency:

17 / 25

Which two-pronged metal device when struck, produces a sound of constant pitch?

18 / 25

When two identical (progressive) waves are super-imposed, the velocity of resultant wave:

19 / 25

Which of the following properties of sound is affected by change in air temperature?

20 / 25

To what forms of waves the phenomenon of interference applies?

21 / 25

Which property of sound is not affected by change in air temperature?

22 / 25

The velocity of sound in water is ................ than that of air:

23 / 25

Besides sound, Doppler effect occurs for:

24 / 25

What is a sound recording device used for recording speech for later playback or to be typed into print?

25 / 25

What is the linear succession of musical tones that is perceived as a ring entity?

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