English

Answer briefly. Wave motion is doubly periodic. Explain.

Advertisements
Advertisements

Question

Answer briefly.

Wave motion is doubly periodic. Explain.

Short/Brief Note
Advertisements

Solution

  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.
shaalaa.com
  Is there an error in this question or solution?
Chapter 8: Sound - Exercises [Page 157]

APPEARS IN

Balbharati Physics [English] Standard 11 Maharashtra State Board
Chapter 8 Sound
Exercises | Q 2. (i) | Page 157

RELATED QUESTIONS

Answer briefly.

Define wavelength of a wave.


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`

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 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

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 ______


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 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 ______.


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 ______.


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 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 ______.


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 ______.


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 ______. 


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×