Advertisements
Advertisements
प्रश्न
Solve the following problem.
A tuning fork of frequency 170 Hz produces sound waves of wavelength 2 m. Calculate the speed of sound.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Answer briefly.
Wave motion is doubly periodic. Explain.
Answer briefly.
Define amplitude.
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`
Define the relation between velocity, wavelength, and frequency of the 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
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 ____________.
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 ______.

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 ____________.

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 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 ______.
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)
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 ______.
