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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता ११ वी

Answer briefly. Wave motion is doubly periodic. Explain.

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प्रश्न

Answer briefly.

Wave motion is doubly periodic. Explain.

टीपा लिहा
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उत्तर

  1. A wave particle repeats its motion after a definite interval of time at every location, making it periodic in time.
  2. Similarly, at any given instant, the form of a wave repeats itself at equal distances making it periodic in space.
  3. Thus, wave motion is a doubly periodic phenomenon, i.e., periodic in time as well as periodic in space.
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पाठ 8: Sound - Exercises [पृष्ठ १५७]

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बालभारती Physics [English] Standard 11 Maharashtra State Board
पाठ 8 Sound
Exercises | Q 2. (i) | पृष्ठ १५७

संबंधित प्रश्‍न

Answer briefly.

Define wavelength of a wave.


Define the relation between velocity, wavelength, and frequency of the wave.


Answer briefly.

Explain what is meant by phase of a wave.


Define progressive wave.


State any four properties of progressive wave.


Solve the following problem.

A tuning fork of frequency 170 Hz produces sound waves of wavelength 2 m. Calculate the speed of sound.


Sound wave A has period 0.015 s, sound wave B has a period of 0.025 s. Which sound has greater frequency?


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?


Sound waves are passing through two routes one in straight path and the other along a semicircular path of radius r and are again combined into one pipe and superposed as shown in the figure. If the velocity of sound waves in the pipe is v, then frequencies of resultant waves of maximum amplitude will be integral multiples of ______.


In frequency modulated wave ______.


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 ____________.


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 ____________.


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 ______.


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?


In communication system, the process of superimposing a low frequency signal on a high frequency wave is known as ______.


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?


The energy of photon corresponding to a radiation of wavelength 600 nm is 3.32 × 10−19 J. The energy of a photon corresponding to a wavelength of 400 nm is ______. 


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