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प्रश्न
Fill in the blanks with suitable words .
Wave speed in metres per second equals frequency in ............ multiplied by ..................... in ..................
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उत्तर
Wave speed in meters per second equals frequency in hertz multiplied by wavelength in meters.
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संबंधित प्रश्न
Write the approximate speed of sound in air.
Guess which sound has a higher pitch:
Which of the following is the speed of sound in copper and which in aluminium?
(a) 5100 m/s
(b) 1500 m/s
(c) 3750 m/s
A jet aircraft flies at a speed of 410 m/s. What is this speed known as?
Calculate the frequency of a wave whose time-period is 0.02 s.
The incidence of ______ in daily life shows that the velocity of sound is less than the velocity of light.
Hydrogen gas is filled in two identical bottles, A and B, at the same temperature. The mass of hydrogen in the two bottles is 12 gm and 48 gm respectively. In which bottle will sound travel faster? How many times be as fast as the other?
The velocity of sound in air at a particular temperature is 330 ms–1. What will be its value when temperature is doubled and the pressure is halved?
The thunder of cloud is heard 9.8 seconds later than the flash of lightning. If the speed of sound in air is 330 ms–1, what will be the height of the cloud?
Establish the relationship between the speed of sound, its wavelength and frequency. If the velocity of sound in air is 340 m s–1, calculate
(i) wavelength when the frequency is 256 Hz.
(ii) frequency when the wavelength is 0.85 m
