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Solve the following problem. A tuning fork of frequency 170 Hz produces sound waves of wavelength 2 m. Calculate speed of sound. - Physics

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प्रश्न

Solve the following problem.

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

बेरीज
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उत्तर

Given: n = 170 Hz, λ = 2 m

To find: velocity of sound (v)

Formula: v = nλ

Calculation: From formula,

v = 170 × 2

∴ v = 340 m/s

The velocity of sound 340 m/s.

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पाठ 8: Sound - Exercises [पृष्ठ १५८]

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बालभारती Physics [English] Standard 11 Maharashtra State Board
पाठ 8 Sound
Exercises | Q 3. (ii) | पृष्ठ १५८

संबंधित प्रश्‍न

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`

Answer briefly.

Explain what is meant by phase of a wave.


Define progressive wave.


State any four properties of progressive wave.


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


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


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 ______.


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 ____________.


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 ______.


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 ______.


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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