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प्रश्न
Answer briefly.
Define wavelength of a wave.
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उत्तर
Wavelength (λ): The distance between two successive particles which are in the same state of vibration is called the wavelength of the wave. SI unit is (m).
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संबंधित प्रश्न
Answer briefly.
Wave motion is doubly periodic. Explain.
Answer briefly.
Define amplitude.
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.
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
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 ______.
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?
When the kinetic energy of an electron is increased, the wavelength of the associated wave will ______.
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 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].
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 ______.
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 ______.
