Which of the following is NOT an effective way of reducing noise pollution in a city neighbourhood?
AIncreasing the volume of TV and music systems to mask outside noise
BPlanting trees along roads and around buildings
CConducting noisy operations away from residential areas
DInstalling silencing devices on industrial machines and home appliances
Answer & Solution
Correct answer: A. Increasing the volume of TV and music systems to mask outside noise
Raising indoor volume only ADDS to the overall noise and damages the listener's hearing. Effective measures attack the SOURCE: silencers, distance, and absorbing barriers (trees, walls) that dampen sound before it reaches people.
Related questions
Why does a damaged eardrum lead to hearing impairment?Doctors and engineers use 'ultrasound' to look inside bodies and check welds in metal pipeVocal cord length is about 20 mm in men, 15 mm in women, and much shorter in young childreSound from a small bell is heard inside a swimming pool when the bell is rung underwater. Two bells A and B are struck. A has the SAME loudness as B but a HIGHER pitch. Which stateIf the amplitude of a vibration doubles, the loudness of the sound produced:Sound travels through a solid (like a wooden ruler) MORE easily than through air mainly beBats and dogs can hear sounds well beyond what humans can. Police use a special whistle th