A standing wave with 7loops is generated in a string. If the waves travel at 17.5 m/s with a frequency of 1.40 × 102Hz. How long is the string?
0.875m
8m
0.438m
56m
In which direction will the particles move, If a transverse wave is a transporting energy from east to west?
East to west only
Both eastward and westward
North to south only
Both northward and southward
The frequency of a wave travelling at a speed of 500 m/s is 25Hz. What is its time period?
20 s
0.05 s
25 s
0.04 s
What is called the persistence of audible sound due to the successive reflections from the surrounding objects even after the source has stopped to produce that sound?
Reflection
Echo
Reverberation
Rarefaction
An FM radio station instructs your radio receiver how to move its speaker cone by varying the.
Amount of electric charge it pushes up and down its antenna.
Amplitude of the radio wave it produces.
Strength of the electric and magnetic fields in the radio wave it produces.
Frequency of the radio wave it produces.
Pick out the most accurate from the following:
Sound and light waves both have similar wavelength
Sound and light waves both obey the laws of reflection
Sound and light waves both travel as longitudinal waves
Sound and light waves both travel through vacuum
Which of the following will remain unchanged when a sound wave travels in air or in water?
Frequency
Wavelength and frequency
Speed and frequency
Amplitude
A sound wave is a mechanical wave, not an electromagnetic wave. Why?
Particles of the medium move perpendicular to the direction of energy transport.
A sound wave transports its energy through a vacuum.
Particles of the medium regularly and repeatedly oscillate about their rest position.
A medium is required in order for sound waves to transport energy
The study of waves applies to what other subject?
Lightning
Chemistry
Sound
Mathematics
What is the source of all wave motion?
Vibrating object
Region of variable high and low pressure
Wave pattern
Harmonic object
