Science true or false. [1 M]

State whether the following statements are true or false: If the amplitude of vibrations is large, sound is feeble.

State whether the following statements are true or false: The number of oscillations per second of a vibrating object is called its time-period.

State whether the following statements are true or false: Sound cannot travel in vacuum.

The pitch of a sound depends in the frequency of the waves.

The sound could not travel in solid.

Tabla is a musical instrument.

Shriller sound has more frequency.

The time taken to complete one oscillation is called frequency.

Man cannot hear sound of bats.

Light travels much faster than sound.

Sound travel faster in air, slower in iron.

Loud sounds have high frequencies.

The loudness is expressed in a unit called decibel.

Sound does not need a medium for its propagation.

Sound cannot travel through vacuum.

The sound in a sitar is produced by plucking its strings.

State whether the following statements are true or false: Noise pollution may cause partial hearing impairment.

State whether the following statements are true or false:
The lower the frequency of vibration, the higher is the pitch.

State whether the following statements are true or false: Unwanted or unpleasant sound is termed as music.

State whether the following statements are true or false: If the amplitude of vibrations is doubled, the loudness of sound also gets doubled.

State whether the following statements are true or false: When the amplitude of vibrations is halved, the loudness of sound becomes one-fourth.