Last seen: Nov 14, 2021
Correct answer is: (b) the number of complete vibrations per second
(a) We can hear the sound of an approaching train by putting our ear to a railway line because the sound waves travel faster through the steel than th...
(a) The crest is a part of a transverse wave which is the elevation experienced by the wave from the line which is above zero disturbance. Trough is a...
(a) Compression is a part of a longitudinal wave in which the particles of the medium are close to each other which reduces the volume of the medium. ...
(a) In longitudinal waves, the particles vibrate in the back and forth in the same direction. These waves can be produced in solids, liquids, and gase...
(a) Frequency is defined as the no. of vibrations per second. Wavelength is the minimum distance in which the wave repeats. Velocity is the spee...
(a) When the air is gradually pumped out of the glass vessel, the ringing of the electric bell cannot be heard as there is a creation of vacuum inside...
(a) Sound is produced when the object vibrates. For example, the production of sound from the strings of the guitar is possible because when the strin...
(a) Sound is defined as the form of energy which can be heard by us. Sound waves are longitudinal waves in air. (b) Consider a bell jar which is co...
Compression is defined for the longitudinal waves in which the particles come closer such that it is at high pressure. Rarefaction is defined for t...
Frequency, f = 1020 Hz Velocity, v = 340 m/s Wavelength, λ = ? = 33.3 cm
When the ringing bell is suspended in a vacuum chamber it cannot be heard outside because there are no air molecules that vibrate to carry the sound w...
Frequency is defined as the no. of complete waves that are produced in one second. Time period is defined as the time taken by the wave to complete...
Velocity, v = 340 m/s Frequency, f = 512 Hz Wavelength, λ = ? = 0.66 m
Frequency is the no. of vibrations produced per second = 128 Hz Wavelength, λ = 2.7 m Speed = fλ = 345.6 m/s
The sound is heard before because the sound waves travel through the air molecules by creating vibrations while the smell reaches to us through the mo...
Fill the beaker with water till its brim. Now touch the surface of the water with the prongs of the vibrating tuning forks. It can be seen that water ...
We cannot see the vibrations because the time interval between the two successive vibrations is very less that it hard to observe them.
(a) Vibrations in the stretched strings of sitar (b) Vibrations from the stretched membrane (c) Vibrations from the prongs (d) Vibrations fro...
The ringing bicycle bell does not produce sound when it is held tightly with hand because the vibrations are stopped and so the sound production stops...