Q13 of 199 Page 185

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

The speed of sound in copper is 3750 m/s where as the speed of sound in aluminium is 5100 m/s.

In which medium sound travels fastest: air, water or steel?

Out of solids, liquids and gases :

(a) in which medium sound travels slowest?

(b) in which medium sound travels fastest?

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

What is the speed of sound :

(a) in air?

(b) in water?

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