By changing length of the scale protruding out of table and vibrating it we can produce sounds of different frequencies. This is possible due to:

change in frequency

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change in velocity

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change in amplitude

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all of the above

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Solution

The correct option is A change in frequency
The longer the vibrating material, slower is the oscillation of scale and hence low sound is produced.
Shortening the scale causes it to move up and down quickly producing a higher pitched (frequency) sound.

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By changing length of the scale protruding out of table and vibrating it we can produce sounds of different frequencies. This is possible due to:

The correct option is A change in frequencyThe longer the vibrating material, slower is the oscillation of scale and hence low sound is produced. Shortening the scale causes it to move up and down quickly producing a higher pitched (frequency) sound.

The correct option is A change in frequency
The longer the vibrating material, slower is the oscillation of scale and hence low sound is produced.
Shortening the scale causes it to move up and down quickly producing a higher pitched (frequency) sound.