1. Which of the following substances will have the lowest speed of sound?
2. What is the approximate range of sound for humans?
3. Loudness of sound depends upon which of the following?
4. Sonar is a device that uses ultrasonic waves to measure the distance, direction and speed of object . . . . . . . .
5. It is a quantity that does not describe the nature of a wave-
6. A person clapped near the rock and he was heard echo after 4 seconds. So what is the distance of the rock from the person?
(Speed of sound = 346m/s)
(Speed of sound = 346m/s)
7. Echocardiogram is more closely related to?
8. With the propagation of a longitudinal wave through a material medium, the quantities transferred in the direction of propagation are
9. Which of the following statements is true? The velocity of sound is
10. A worker was working on the rail track. A boy at a distance holds his ear near the rail track. This boy was able to hear sound of the blow of workman twice. It is because of
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