Advertisements
Advertisements
प्रश्न
Write true or false for a given statement.
Sound can travel in a vacuum.
विकल्प
True
False
Advertisements
उत्तर
False.
Sound requires medium to travel.
APPEARS IN
संबंधित प्रश्न
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.
Fill in the blanks with suitable words .
Wave speed in metres per second equals frequency in ............ multiplied by ..................... in ..................
The maximum speed of vibrations which produce audible sound will be in :
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?
The incidence of ______ in daily life shows that the velocity of sound is less than the velocity of light.
Helium gas is filled in two identical bottles A and B. The mass of the gas in the two bottles is 10 gm and 40 gm respectively. If the speed of sound is the same in both bottles, what conclusions will you draw?
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?
A source of sound is travelling with a velocity 40 km/h towards an observer and emits a sound of frequency 2000 Hz. If the velocity of sound is 1220 km/h, then the apparent frequency heard by the observer is _____.
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?
