Sounds 1

1. The speed of sound in air is about?

Question 1 of 23

2. Sound waves obey the laws of reflection?

Question 2 of 23

3. Sound originates from vibrating bodies. True or False?

Question 3 of 23

4. Reflected sound is called (from an obstacle)?

Question 4 of 23

5. Why is a sound wave a longitudinal wave?

Question 5 of 23

6. The angle of reflection of a sound wave is equal to the angle of incidence?

Question 6 of 23

7. Which among the following is an application of pulse echo technique?

Question 7 of 23

8. In which of the following medium is sound transmitted slowest?

Question 8 of 23

9. How is sound energy propagated from a vibrating object?

Question 9 of 23

10. Why are concert halls and broadcasting studios made of walls of absorbent materials such as cotton wool or rubber?

Question 10 of 23

11. Solids transmit sound at a speed of?

Question 11 of 23

12. Does a vacuum transmit sound waves?

Question 12 of 23

13. The velocity of sound in salty water is?

Question 13 of 23

14. Which of the following is a factor affecting velocity of sound in air?

Question 14 of 23

15. The velocity of sound in fresh water is?

Question 15 of 23

16. In which of the following medium is sound transmitted fastest?

Question 16 of 23

17. The velocity of sound in air:

Question 17 of 23

18. How do you calculate the distance in pulse echo technique?

Question 18 of 23

19. Sound wave is which type of a wave?

Question 19 of 23

20. Which of the following is the most common use of reflection of sound?

Question 20 of 23

21. Sound travels faster in HOT air than in COLD air?

Question 21 of 23

22. Which of the following is NOT a source of sound?

Question 22 of 23

23. Define reverberation?

Question 23 of 23