Question

The frequency of a given sound is 1.5 kHz. The vibrating body is
(a) completing 1,500 vibrations in one second.
(b) taking 1,500 seconds to complete one vibration.
(c) taking 1.5 seconds to complete one vibration.
(d) completing 1.5 vibrations in one second​

Answer 1

Answer:

option b

Explanation:

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Answer 2

Answer:

The vibrating body/sound source is completing $1500$ vibrations/waves in one second. Option (a) is correct.

Explanation:

• In a given unit of time, the number of waves passing through a fixed place is called frequency.
• The units of frequency are Hertz $(Hz)$ and $s^{-1}$.

It is given that the sound's frequency $1.5$ $kHz$. This means the frequency of the sound is $1500$ $Hz$.

So, according to the definition of frequency, $1500$ waves are passing through a fixed place in one second.

Hence, the vibrating body is completing $1500$ vibrations in one second.

Option (a) is correct.