A vibrating body makes 1000 oscillations in half a minute. This frequency of vibrations will lie in the ultrasound range.

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Two bar magnets are placed in a Vibration Magnetometer and allowed to vibrate. They make $20$ oscillations per minute when their similar poles are on the same side and they make $15$ oscillations per minute with their opposite poles lie on the same side. The ratio of their moments is :

(a) What is a vibration (or an oscillation)? Define 'amplitude' of vibration of an object.

(b) What is the frequency of a vibrating body whose time-period is 0.05 second ?

Q. Which of the following statements is correct?
(a) The time taken for one oscillation is the frequency.
(b) The distance covered by a vibrating body while making one complete oscillation is four times the amplitude.
(c) The greater the amplitude of a vibrating body, the higher will be the pitch of the sound it gives out.
(d) In a string instrument, thin strings are used for low pitch notes.

Q. A vibrating body makes 1000 oscillations in half a minute. This frequency of vibrations will lie in the infrasound range.

Ultrasound has a frequency of vibration

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A vibrating body makes 1000 oscillations in half a minute. This frequency of vibrations will lie in the ultrasound range.​

A vibrating body makes 1000 oscillations in half a minute. This frequency of vibrations will lie in the ultrasound range.