# PPSC Lecturer of Physics Online Test 41 Past Papers

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 Test Instructions:- Test Name Lecturer PhysicsÂ Subject Physics Test 41 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 41

1 / 25

A pendulum vibrates with a time period of 1s. Which range of sound is produced by it?

2 / 25

A bomb explodes on the Mars. How long it will take for the sound to reach the earth?

3 / 25

What is the best sound source to produces a pure note?

4 / 25

Which phrase is used for reproduction of original sound?

5 / 25

The note of the lowest frequency is called the:

6 / 25

What is the change in path, when sound wave is reflected from a rigid support?

7 / 25

The ratio of frequencies in a stretched string is:

8 / 25

The ratio of intensities of two sound waves is 4 : 9. What will be the ratio of their amplitudes?

9 / 25

For which waves phenomenon of beats takes place?

10 / 25

What is the distance between a node and an antinode?

11 / 25

What is term for the persistence of sound in a hall?

12 / 25

What is title for combination of notes that produce jarring effect on the ear?

13 / 25

In order to hear an echo, what is the minimum distance between the sound and reflecting surface?

14 / 25

The ratio of intensities of two waves is 1:16. What will be the ratio of their amplitudes?

15 / 25

The phase difference between the particles vibrating between two consecutive nodes is:

16 / 25

Which type of oscillations produce resonance?

17 / 25

What is the velocity of sound in vacuum?

18 / 25

What is the term used for the ratio of the speed of a body and speed of sound?

19 / 25

Which effect produces ultrasonics in quartz?

20 / 25

Which acoustical apparatus is used for measurement of the speed of sound in a gas or a solid rod?

21 / 25

Which characteristic successively increases in the musical scale?

22 / 25

What will be the frequency if an empty vessel is filled with water?

23 / 25

On which characteristics, the loudness of sound depends on?

24 / 25

What is the shape of a pure tone?

25 / 25

What will be the sound speed if the frequency is doubled?