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State any four properties of progressive wave. - Physics

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प्रश्न

State any four properties of progressive wave.

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उत्तर

The properties of progressive waves are:
Amplitude, wavelength, period, double periodicity, frequency and velocity.

Progressive waves are classified into two types:

  1. Transverse progressive waves
  2. Longitudinal progressive waves

Characteristics of progressive waves:

  1. All the vibrating particles of the medium have the same amplitude, period, and frequency.
  2. State of oscillation, i.e., phase changes from particle to particle.
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Common Properties of All Waves
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अध्याय 8: Sound - Exercises [पृष्ठ १५८]

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बालभारती Physics [English] Standard 11 Maharashtra State Board
अध्याय 8 Sound
Exercises | Q 2. (xviii). ii. | पृष्ठ १५८

संबंधित प्रश्न

Answer briefly.

Wave motion is doubly periodic. Explain.


Answer briefly.

Define amplitude.


Answer briefly.

Draw a wave and indicate points which are

  1. in phase
  2. out of phase
  3. 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 

  1. the frequency
  2. the period

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 ______


Two waves of the same amplitude superimpose to produce two beats per second. What is the ratio of minimum loudness to that of one of the waves?


The ratio of minimum to maximum wavelength in Balmer series is ____________.


The wave of the wavelength 30 cm and frequency 100 Hz will be ______.


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 ____________.


If velocity of sound in a gas is 360 m/s and the distance between a compression and the nearest rarefaction is 2 m, then the frequency of sound is ____________.


In a closed pipe, the note of fundamental frequency can be produced if the length of the air column is equal to ____________.


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 ______.


The equation of wave motion is `y = 6 sin[12pit-0.02pix+pi/2],` where x is in m and t in second. The velocity of the wave is ______.


The displacement-time graphs of two particles A and B are straight lines making angles of 30° and 60° respectively with the time axis. If the velocity of A is vA and that of B is vB, the value of vA/vB is ______.


The wavelength of two waves are 50 and 51 cm respectively. If the temperature of the room is 20°C then what will be the number of beats produced per second by these waves, when the speed of sound at 0°C is 332 m/s?


The width of a slit is 0.012 mm. Monochromatic light is incident on it. The angular position of first bright line is 5.2°. The wavelength of incident light is ______. [sin 5.2° = 0.0906].


A source of 300 Hz frequency, an observer and a wind are moving as shown in the figure with respect to the ground. The frequency heard by observation is ______.

 

(Take, the speed of sound in air = 340 m/s)


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 ______.


If a string fixed at both ends vibrates in four loops. The wavelength is 10 cm. The length of string is ______.


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