1. In which medium speed of sound is maximum an din which minimum ?
2. A pendulum makes 16 oscillations in 2 seconds . What is the frequency of the pendulum ?
1) In steels the speed is maximum. It is about 6000 m/s. The speed of sound is minimum in air. It is about 340 m/s.
2) It is given that the pendulum oscillates 16 times in 2 seconds.
Frequency = No. of oscillations / Total time taken
= 16 / 2 = 8 Hz.
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