Physics
Grade-8
Easy
Question
The loudness of a sound decreases as we move away from a source of the sound. This is because _____.
- The frequency of sound decreases with increasing distance
- The frequency of sound increases with increasing distance
- The amplitude of sound decreases with increasing distance
- The amplitude of sound increases with increasing distance
Hint:
Amplitude decreases indicates the decrease in loudness of the sound
The correct answer is: The amplitude of sound decreases with increasing distance
- The loudness of a sound depends on the amplitude of the vibration producing the sound.
- Therefore, the loudness of sound decreases as we move away from the source of the sound because the amplitude of sound decreases with increasing distance.
- So, the correct option is c.
Related Questions to study
Physics
The loudness of sound I is ____ to the loudness of sound II.
The loudness of sound I is ____ to the loudness of sound II.
PhysicsGrade-8
Physics
The picture below shows sound waves in different colors. Pick the color of the sound wave which is of the lowest frequency.
The picture below shows sound waves in different colors. Pick the color of the sound wave which is of the lowest frequency.
PhysicsGrade-8
Physics
The picture below shows three sound wave forms. They have the same ____.
The picture below shows three sound wave forms. They have the same ____.
PhysicsGrade-8
Physics
Which of the following has the lowest frequency and lowest amplitude?
Which of the following has the lowest frequency and lowest amplitude?
PhysicsGrade-8
Physics
Which of the following has the highest frequency and lowest amplitude?
Which of the following has the highest frequency and lowest amplitude?
PhysicsGrade-8
Physics
Which of the following sounds shows the lowest pitch?
Which of the following sounds shows the lowest pitch?
PhysicsGrade-8
Physics
Given below are the sound wave forms of the voices of a boy and a girl. The amplitude of the boy’s voice is ____ the amplitude of the girl’s voice.
Given below are the sound wave forms of the voices of a boy and a girl. The amplitude of the boy’s voice is ____ the amplitude of the girl’s voice.
PhysicsGrade-8
Physics
The time period of the sound wave whose frequency is 0.5 Hz is ____s.
The time period of the sound wave whose frequency is 0.5 Hz is ____s.
PhysicsGrade-8
Physics
The frequency of a sound wave whose time period is 0.01s is ___ Hz.
The frequency of a sound wave whose time period is 0.01s is ___ Hz.
PhysicsGrade-8
Physics
There are ___ complete oscillations are shown in the graph below.
There are ___ complete oscillations are shown in the graph below.
PhysicsGrade-8
Physics
The wavelength of the sound wave shown below is ____ mm.
The wavelength of the sound wave shown below is ____ mm.
PhysicsGrade-8
Physics
Which points represent the rarefactions in the graphical wave representation shown?
Which points represent the rarefactions in the graphical wave representation shown?
PhysicsGrade-8
Physics
The time period of the sound wave whose frequency is 1 Hz is ____s.
The time period of the sound wave whose frequency is 1 Hz is ____s.
PhysicsGrade-8
Physics
The frequency of a sound wave whose time period is 0.02s is ___ Hz.
The frequency of a sound wave whose time period is 0.02s is ___ Hz.
PhysicsGrade-8
Physics
The wavelength of the sound wave shown below is ____ mm.
The wavelength of the sound wave shown below is ____ mm.
PhysicsGrade-8
