Q15 of 199 Page 185

What is the speed of sound :

(a) in air?


(b) in water?


(c) in iron?

(a) The speed of sound in air 343 m/s.


(b) The speed of sound in water is 1,484 m/s.


(c) The speed of sound in iron is 5,130 m/s.


More from this chapter

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13

Which of the following is the speed of sound in copper and which in aluminium?

(a) 5100 m/s (b) 1500 m/s


(c) 3750 m/s

 14

If you want to hear a train approaching from far away, why is it more convenient to put the ear to the track?

 16

What name is given to those aircrafts which fly at speeds greater than the speed of sound?

 17

A jet aircraft flies at a speed of 410 m/s. What is this speed known as?