Sound & Wave Basics: Class 9 CBSE

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Quiz on longitudinal and transverse waves till frequency

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Sneh Prabha

Estados Unidos

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Sound & Wave Basics: Class 9 CBSE


Froggy Jumps Sound & Wave Basics: Class 9 CBSEVersión en línea Quiz on longitudinal and transverse waves till frequency por Sneh Prabha 1 Which type of wave does not require a medium to propagate? a Longitudinal sound waves b Mechanical waves c Electromagnetic waves 2 In a sound wave, what does frequency measure? a Number of vibrations per second b Amplitude c Wavelength 3 Which part of a longitudinal wave shows high density of particles? a Compression b Wavelength c Rarefaction 4 What is the SI unit of frequency? a Hertz b Watt c Pascal 5 Which medium change primarily affects speed of sound? a Color b Temperature only c Density and elasticity 6 In a transverse wave, particle displacement is perpendicular to the: a Frequency direction b Direction of wave propagation c Direction of energy transfer 7 Which factor does not affect the speed of sound in air? a Temperature b Humidity c Color of the object 8 If frequency increases and speed remains same, what happens to wavelength? a Remains same b Wavelength increases c Wavelength decreases 9 Sound frequency below 20 Hz is called: a Ultrasonic b Infrasonic c Audible 10 Sound frequency above 20 kHz is called: a Ultrasonic b Infrasonic c Audible 11 Which wave characteristic remains constant in a given medium for a particular frequency? a Wavelength b Amplitude c Speed 12 Which type of wave can carry sound energy in air? a Transverse b Longitudinal c Circular 13 What happens to the speed of sound when the temperature of air increases? a Speed decreases b Speed increases c Remains unchanged 14 Which is a property of a wave used to identify pitch? a Speed b Amplitude c Frequency 15 Which medium generally transmits sound faster than air? a Gas at extremely low pressure b Water c Vacuum 16 In a standing wave, nodes are points of: a Directional flow b Maximum movement c No movement 17 Which factor primarily affects the amplitude of a sound wave? a Source energy b Medium density c Wavelength 18 Which of the following is true for both longitudinal and transverse waves? a They transfer energy b They require a medium c They travel at the same speed in all media 19 If a sound wave doubles in frequency, what happens to its pitch? a Pitch unchanged b Pitch increases c Pitch decreases 20 Which statement best describes frequency in waves? a Number of cycles per unit time b Distance between peaks c Speed of propagation

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Sound & Wave Basics: Class 9 CBSEVersión en línea

por Sneh Prabha

Which type of wave does not require a medium to propagate?

In a sound wave, what does frequency measure?

Which part of a longitudinal wave shows high density of particles?

What is the SI unit of frequency?

Which medium change primarily affects speed of sound?

In a transverse wave, particle displacement is perpendicular to the:

Which factor does not affect the speed of sound in air?

If frequency increases and speed remains same, what happens to wavelength?

Sound frequency below 20 Hz is called:

Sound frequency above 20 kHz is called:

Which wave characteristic remains constant in a given medium for a particular frequency?

Which type of wave can carry sound energy in air?

What happens to the speed of sound when the temperature of air increases?

Which is a property of a wave used to identify pitch?

Which medium generally transmits sound faster than air?

In a standing wave, nodes are points of:

Which factor primarily affects the amplitude of a sound wave?

Which of the following is true for both longitudinal and transverse waves?

If a sound wave doubles in frequency, what happens to its pitch?

Which statement best describes frequency in waves?