Jane hears a fire truck siren that does not change in pitch or loudness. The fire truck is

PHYSICAL SCIENCES

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	leaving the station.
B	parked at the station.
C	passing by the station.
D	coming toward the station.

Explanation:

Detailed explanation-1: -Pitch is related to frequency. Changing the number of vibrations per second changes the pitch.

Detailed explanation-2: -The pitch of a sound depends on the frequency while loudness of a sound depends on the amplitude of sound waves.

Detailed explanation-3: -Factors affecting the pitch of sound Pitch of the sound depends on the frequency of the sound wave. The pitch is affected by the source of production of sound wave. It also depends on the shape of the medium in which it travels. It does not depend on the properties of the medium.

Detailed explanation-4: -Loudness is the phenomenon of the wave of sound which is dependent on the amplitude of the wave. Loudness is directly proportional to the square of the amplitude. The pitch of the sound is directly proportional to the frequency of the sound.

There is 1 question to complete.