Advertisements
Advertisements
प्रश्न
An ultrasonic wave is sent from a ship towards the bottom of the sea. It is found that the time interval between the transmission and reception of the wave is 1.6 seconds. What is the depth of the sea, if the velocity of sound in the seawater is 1400 ms–1?
उत्तर
Speed of sound = `" Distance travelled"/"Time taken"`
v = `(2"d")/"t"`
d = `("v""t")/2` = `(1400xx1.6)/2`
d = 1120 m
The depth of the sea is 1120 m.
APPEARS IN
संबंधित प्रश्न
Fill in the blank.
Sound travels faster in ________ than in liquids.
Guess which sound has a higher pitch:
Explain why, the flash of a gun shot reaches us before the sound of the gun shot.
A sound signal of 128 vibrations per second has a wavelength of 2.7 m. Calculate the speed with which the wave travels.
When we put our ear to a railway line, we can hear the sound of an approaching train even when the train is far off but its sound cannot be heard through the air. Why?
The speeds of sound in four different media are given below. Which of the following is the most likely speed in m/s with which the two under water whales in a sea talk to each other when separated by a large distance?
Numerical problem.
A stone is dropped from the top of a tower 750 m high into a pond of water at the base of the tower. Calculate the number of seconds for the splash to be heard? (Given g = 10 m s–2 and speed of sound = 340 m s–1)
The Velocity of sound is high in gases than liquids.
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
The velocity of sound by a tuning fork frequency of 480 Hz is 340 ms Its wavelength is ______.
