Tag: sound and noise

Questions Related to sound and noise

Which of the following measure can be taken to control noise pollution in our surroundings.

physics sound and noise musical sound and scale pleasant, unpleasant sounds and noise pollution sound noise and pollution

  1. by using silencers in vehicles

  2. planting trees

  3. using noise mufflers

  4. all

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Correct Option: D
Explanation:

Noise pollution can be reduced by using silencers in vehicles, industrial machines, and home appliances reducing use of vehicle horns, running TV, radio and music systems at low volumes. Planting of trees along roads and buildings also help to reduce noise pollution

Noise pollution can be harmful to human beings 

physics sound and noise musical sound and scale pleasant, unpleasant sounds and noise pollution sound noise and pollution

  1. it can cause hearing loss

  2. it can cause sleeplessness

  3. can cause hypertension

  4. all

Show answer
Correct Option: D
Explanation:

noise pollution can lead to a number of health-related problems. Some of them are as follows:

 (i) Hearing loss  

(ii)Inability to sleep    

(iii) Hypertension

(iv) A severe headache

 (v) Stress

Why Trees are  planted along the roads

physics sound and noise musical sound and scale pleasant, unpleasant sounds and noise pollution sound noise and pollution

  1. To make the roads beautiful

  2. To reduce sound

  3. To provide shade

  4. All

Show answer
Correct Option: B
Explanation:

Trees are planted along the roads and around buildings so that it could cut off sound vibrations produced from vehicles speakers etc. by absorbing them, hence leading in prevention of Noise pollution.

State whether given statement is True or False :
Music for one person can be noise to others.

physics sound and noise musical sound and scale pleasant, unpleasant sounds and noise pollution sound noise and pollution

  1. True

  2. False

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Correct Option: A
Explanation:

Music for a person depends upon the nature , feelings and mood of the person , therefore music for one person can be noise for others .

To reduce noise pollution, which of the following devices must be installed on the vehicles ?

physics sound and noise musical sound and scale pleasant, unpleasant sounds and noise pollution sound noise and pollution

  1. Lights

  2. Speedometer

  3. Horn

  4. Silencer

Show answer
Correct Option: D
Explanation:

Lights in a vehicle are used to experience the  view ahead of vehicle , in low light .

Speedometer is used to measure the speed of vehicle .
Horn is used to signal other vehicles , and a horn produces noise pollution .
Silencer in a vehicle is used to reduce the sound of the engine of vehicle , therefore it must be installed on the vehicles to reduce noise pollution .

The waveform of noise sound is 

physics sound and noise musical sound and scale pleasant, unpleasant sounds and noise pollution sound noise and pollution

  1. Irregular

  2. Sudden

  3. Periodic

  4. Both A and B

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Correct Option: D
Explanation:

Music is a pleasant sound, whereas noise is unpleasant to hear. The waveform of musical sound is periodic and regular whereas the waveform of noise is irregular and sudden.
The frequencies that make up a musical sound are in the ratio of small whole numbers whereas this is not the case for noise.

Presence of excessive unwanted sounds in the environment is called 

physics sound and noise musical sound and scale pleasant, unpleasant sounds and noise pollution sound noise and pollution

  1. air pollution

  2. noise pollution

  3. water pollution

  4. all of these

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Correct Option: B
Explanation:

Pollution is that , which harms our environment or health of animals on earth , excessive unwanted sounds are harmful to ear , therefore it is called noise pollution .

Which of the following is not caused due to noise pollution?

physics sound and noise musical sound and scale pleasant, unpleasant sounds and noise pollution sound noise and pollution

  1. Lack of sleep

  2. Hypertension

  3. Diabetes

  4. Anxiety

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Correct Option: C
Explanation:

Diabetes is not caused by noise pollution , as diabetes is caused due to lack of insulin in human body . 

The characteristics of musical sound are

physics sound and noise musical sound and scale pleasant, unpleasant sounds and noise pollution sound noise and pollution

  1. Intensity

  2. Frequency

  3. Quality

  4. All

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Correct Option: D
Explanation:

The characteristics of musical sound are:

(i) loudness (intensity)

(ii) pitch (frequency)

(iii) quality (overall effect of all the harmonics present in the sound).

State whether given statement is True or False :
Sound from outer space adds to the noise pollution on the earth.

physics sound and noise musical sound and scale pleasant, unpleasant sounds and noise pollution sound noise and pollution

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

Sound from outer space does not reach the earth surface as there is vacuum in the outer space. Obviously the sound from outer space can not add up to the noise pollution on the earth.