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प्रश्न
Answer briefly.
Define amplitude.
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उत्तर
Amplitude (A): The largest displacement of a particle of a medium through which the wave is propagating, from its rest position, is called the amplitude of that wave. SI unit is (m).
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संबंधित प्रश्न
Answer briefly.
Define wavelength of a wave.
Answer briefly.
Draw a wave and indicate points which are
- in phase
- out of phase
- have a phase difference of `pi/2`
Answer briefly.
Explain what is meant by phase of a wave.
Define progressive wave.
Solve the following problem.
A certain sound wave in air has a speed 340 m/s and wavelength 1.7 m for this wave, calculate
- the frequency
- the period
Sound wave A has period 0.015 s, sound wave B has a period of 0.025 s. Which sound has greater frequency?
Two sinusoidal plane waves of the same frequency having intensities I0 and 4I0 are travelling in the same direction. The resultant intensity at a point at which waves meet with a phase difference of zero radians is ______
The ratio of minimum to maximum wavelength in Balmer series is ____________.
In frequency modulated wave ______.
The frequency of a tuning fork is 384 per second and velocity of sound in air is 352 m/s. How far the sound has traversed while fork completes 48 vibration?
The wave of the wavelength 30 cm and frequency 100 Hz will be ______.
When the kinetic energy of an electron is increased, the wavelength of the associated wave will ______.
The following figure shows the shape of part of a long string in which transverse waves are produced by attaching one end of the slring to tuning fork of frequency 300 Hz. The velocity of the waves is ____________.
In a closed pipe, the note of fundamental frequency can be produced if the length of the air column is equal to ____________.
The frequency of a tuning fork is 220 Hz and the velocity of sound in air is 330 m/s. When the tuning fork completes 80 vibrations, the distance travelled by the ______.
A progressive wave of frequency 50 Hz is travelling with velocity 350 m/s through a medium. The change in phase at a given time interval of 0.01 s is ______.
When the observer moves towards a stationary source with velocity V1, the apparent frequency of emitted note is F1. When observer moves away from the source with velocity V1, the apparent frequency is F2. If V is the velocity of sound in air and `"F"_1/"F"_2=2` then `"V"/"V"_1` is equal to ______.
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In communication system, the process of superimposing a low frequency signal on a high frequency wave is known as ______.
Two instruments having stretched strings are being played in unison. When the tension of one of the instruments is increased by 1%, 3 beats are produced in 2 s. The initial frequency of vibration of each wire is ______.
An astronaut is approaching the moon. He sends out a radio signal of frequency 5000 MHz and the frequency of echo is different from that of the original frequency by 100 kHz. His velocity of approach wrt, to the moon, is ______.
A progressive wave of frequency 500 Hz is travelling with a velocity of 360 m/s. How far apart are two points 60° out of phase?
Wave of frequency 500 Hz has a phase velocity 360 ms-1. The phase difference between two displacement at a certain point at time 10-3 s apart will be ______.
If a string fixed at both ends vibrates in four loops. The wavelength is 10 cm. The length of string is ______.
