MCQ Class 9 Science Exploration Chapter 10 Sound Waves: Characteristics and Applications

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1. Frequency is defined as:

Question 1 of 20

2. SI unit of frequency is:

Question 2 of 20

3. Time period is:

Question 3 of 20

4. Relation between frequency and time period:

Question 4 of 20

5. Amplitude refers to:

Question 5 of 20

6. Higher amplitude means:

Question 6 of 20

7. Intensity depends on:

Question 7 of 20

8. Speed of sound formula is:

Question 8 of 20

9. Sound travels fastest in:

Question 9 of 20

10. Speed of sound increases with:

Question 10 of 20

11. Pitch depends on:

Question 11 of 20

12. Loudness depends on:

Question 12 of 20

13. Audible range for humans is:

Question 13 of 20

14. Infrasonic waves have frequency:

Question 14 of 20

15. Ultrasonic waves have frequency:

Question 15 of 20

16. Echo is due to:

Question 16 of 20

17. Minimum time gap for echo is:

Question 17 of 20

18. Minimum distance for echo is:

Question 18 of 20

19. Reverberation occurs due to:

Question 19 of 20

20. Which absorbs sound?

Question 20 of 20


 

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