Sound_LS_6

What measures can be taken along the roads to reduce noise pollution caused by traffic?

• a) Encouraging louder engine noises

• b) Declaring the residential area as a no-horn zone

• c) Installing louder horns on vehicles

• d) Promoting increased traffic

What is one effective step to reduce noise pollution along roads in residential areas?

• a) Encouraging honking

• b) Installing louder horns on vehicles

• c) Declaring the residential area as a no-horn zone

• d) Increasing speed limits

How can noise pollution caused by traffic be minimized in residential areas along roads?

• a) Promoting the use of louder horns

• b) Encouraging excessive speeding

• c) Establishing colonies closer to the roads

• d) Declaring the residential area as no use of horns

What action can contribute to reducing noise pollution for residents living along roads?

• a) Introducing silent vehicles

• b) Encouraging excessive honking

• c) Building colonies closer to the roads

• d) Declaring the residential area as no use of horns

Voice of which of the following is likely to have the minimum frequency?

• A. baby girl

• B. baby boy

• C. a man

• D. a woman

Sound can travel through:

• A. gases only

• B. solids only

• C. liquids only

• D. solids, liquids and gases

Which of the following vibrates when a musical note is produced by the cymbals in an orchestra?

• A. stretched strings

• B. stretched membranes

• C. metal plates

• D. air columns

A musical instrument is producing a continuous note. This note cannot be heard by a person having a normal hearing range. This note must then be passing through:

• A. water

• B. wax

• C. vacuum

• D. empty vessel

Which of the following sound frequencies can be heard by a woman having a normal hearing range?

• A) 25000 Hz

• B) 15kHz

• C) 40000 Hz

• D) 25Hz

When we change a feeble sound to a loud sound, we increase its:

• A. frequency

• B. amplitude

• C. speed

• D. timbre