Sound and Waves Quiz

What is the unit of frequency?

• Decibel

• Hertz

• Newton

• Joule

Which of the following is a longitudinal wave?

• Light

• Sound

• Radio waves

• X-rays

The speed of sound is maximum in which of the following?

• Air

• Water

• Vacuum

• Steel

Sound cannot travel through:

• Solids

• Liquids

• Gases

• Vacuum

The loudness of sound is measured in:

• Hertz

• Decibels

• Joules

• Meters

What determines the pitch of a sound?

• Amplitude

• Frequency

• Speed

• Loudness

Which of the following factors affects the speed of sound in a medium?

• Temperature

• Density

• Elasticity

• All of the above

Which property of sound is responsible for the difference in voices of different people?

• Pitch

• Timbre

• Frequency

• Loudness

What is the time period of a sound wave with a frequency of 50 Hz?

• 0.02 s

• 0.05 s

• 0.5 s

• 2 s

What is sound?

• A type of electromagnetic wave

• A longitudinal wave

• A transverse wave

• A radioactive wave