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?
Advertisements
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
A sound wave travels at a speed of 339 m s−1. If its wavelength is 1.5 cm, what is the frequency of the wave? Will it be audible?
A stone is dropped from the top of a tower 500 m high into a pond of water at the base of the tower. When is the splash heard at the top? Given, g = 10 m s−2 and speed of sound = 340 m s−1.
Write the approximate speed of sound in water .
A boy fires a gun and another boy at a distance of 1020 m hears the sound of firing the gun 3 s after seeing its smoke. Find the speed of sound.
What is the speed of sound :
(a) in air?
(b) in water?
(c) in iron?
Which term is used to denote a speed greater than the speed of sound?
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.
Velocity of sound in a gaseous medium is 330 ms–1. If the pressure is increased by 4 times without causing a change in the temperature, the velocity of sound in the gas is
Sound travels faster in ______ and slower in ______.
