Advertisements
Advertisements
प्रश्न
Explain how the principle of echo is used by
The bat during its flight at night
Advertisements
उत्तर
Bats emits its own distinctive sounds. The echoes of the sound help bat to navigate and to locate their prey during night.
संबंधित प्रश्न
Write true or false for a given statement.
A sound is a form of energy.
How do we produce sound ?
Why are musical instruments provided with more than one string ?
Define the term intensity of a sound wave. State the unit in which it is measured.
What are wavelength, frequency, time period and amplitude of a sound wave?
Calculate the wavelength of a sound wave whose frequency is 220 Hz and speed is 440 m/s in a given medium.
Which of the following can produce longitudinal waves as well as transverse waves under different conditions?
Draw displacement-time graph of a wave and show on it the amplitude and time period of wave.
What is sound? What causes it to produce?
A continuous disturbance is created on the surface of water in a ripple tank with a small piece of cork floating on it. Describe the motion of the cork. What does the motion of the cork tell about the disturbance?
A continuous progressive transverse wave of frequency 8 Hz moves across the surface of a ripple tank
If the wavelength of the transverse wave is 32 mm, calculate the speed with which wave travels across the surface of the water.
Is sound a form of energy?
What is echolocation? How do animals make use of this phenomenon?
When a sound wave travels through air, the air particles ______.
How do we hear the sound?
Name the waves used for sound ranging. State one reason for their use.
