Sound 8

What is the range of frequencies audible to the human ear?

• 20hz

• 20hz-2000hz

• 20hz-20,000hz

• 20,000hz

Sound is produced by a ........ object.

• Stationary

• Still

• Moving

• Vibratory

In which medium sound travels faster?

• Air

• Wood

• Water

• Vacuum

Which of the following is a percussion instrument?

• Manjira

• Tabla

• Harmonium

• Saxophone

Sound does not travel in the following....

• Liquids

• Solids

• Vacuum

• Gases

The decibel is the unit the measuring.......

• Pitch

• Loudness

• Frequency

• Quality

The SI unit of frequency is .....

• decibel

• hertz

• ohm

• coulomb

Larger the amplitude......... is the sound.

• Soft

• Louder

• Faint

• Low

......... have longer vocal cords.

• Men

• Women

• Children

• Girls

Rhinoceros can communicate by using infrasonic sounds with frequency as.......

• 10hz

• 20hz

• 5hz

• None of the above