Q.

1 Hz is equal to


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a

1 vibration per minute

b

10 vibrations per minute

c

60 vibrations per minute

d

600 vibrations per minute 

answer is C.

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Detailed Solution

1 Hz is equal to 60 vibrations per minute.
Hertz is the SI unit of frequency which is equal to one cycle per second. Frequency is the reciprocal of time, so we can say that s-1 is also the unit of frequency. Frequency gives us a measure of how often a repeating event occurs per unit time. When a body is in periodic motion, i.e., a motion that is repeated in equal intervals of time, it is said to have undergone one cycle or one vibration before it returns to its original position.
So, 1 Hz = 1 vibration per second
i.e., 1 Hz = 60 vibrations per minute.
 
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