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MCQ General Science Chapter 15 Class 8 Maharashtra Board

MCQ For All Chapters – General Science Class 8

Sound

1. What is the main source of sound production described in the document?

Question 1 of 20

2. What are the two main parts of a tuning fork mentioned in the document?

Question 2 of 20

3. What happens to the air outside the prongs when they move apart during vibration?

Question 3 of 20

4. What is the term for a region of high pressure and high density in a sound wave?

Question 4 of 20

5. What is created in the air when the prongs of a tuning fork come close to each other?

Question 5 of 20

6. What propagates away from the tuning fork prongs as a result of their periodic motion?

Question 6 of 20

7. What vibrates in the ear when sound waves reach it?

Question 7 of 20

8. What is required for the generation and propagation of sound according to the bell jar experiment?

Question 8 of 20

9. What happens to the sound of the electric bell as air is removed from the bell jar?

Question 9 of 20

10. Why can’t astronauts hear each other directly on the moon?

Question 10 of 20

11. What moves away from the source in a sound wave, as asked in the ‘Use your brain power’ section?

Question 11 of 20

12. What is the unit of frequency mentioned in the document?

Question 12 of 20

13. If a tuning fork vibrates 512 times per second, what is its frequency?

Question 13 of 20

14. What determines the frequency of a tuning fork?

Question 14 of 20

15. Why does each glass cup in the ‘Jaltarang’ experiment produce a different sound?

Question 15 of 20

16. In string-based instruments like the guitar, how is the frequency of vibration changed?

Question 16 of 20

17. How does a flute change its sound notes?

Question 17 of 20

18. Where is sound produced in humans?

Question 18 of 20

19. What vibrates in the human larynx to produce sound?

Question 19 of 20

20. What can muscles do to the vocal cords to change sound quality?

Question 20 of 20


 

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