Select one correct word from the given words.
The shrillness of a sound is determined by the .......... of vibration.

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Solution

Shrillness of the sound produced by a body is determined by the pitch of the vibration .And pitch depends on frequency of the vibrating body.
A low pitched sound is also called a hoarse sound.
A high pitched sound is also called a shrill sound.

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Question 4 (e)
Fill in the blank with a suitable word.
Shrillness of a sound is determined by the _______ of vibration.

Fill in the blanks with suitable words.

(a) Time taken by an object to complete one oscillation is called _________.

(b) Loudness is determined by the ________ of vibration.

(d) Unwanted sound is called _________.

(e) Shrillness of a sound is determined by the _________ of vibration.

Fill in the following blanks with suitable words:

(a) Sounds are produced by ___objects.

(b) The human voice box is called___

(d) A set of three ___tiny in the middle part of ear passes on sound vibrations from the eardrum to the liquid in cochlea.

(e) The unit of frequency is___

(f) The timet taken by an object to complete one oscillation is called ___

(g) The shrillness of a sound is determined by the___ of vibration.

(h) Unpleasant sound is called___

(i) Sound which is pleasing to the era is called___ sound

(j) A person having partial hearing loss can hear properly by wearing a device called hearing___ on the ear.

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