Vibration is defined as a rapid to and fro or up and down movement about a mean position. Vibrations travel through a medium such as air and reach our ears where they are interpreted by the brain as sound. Human beings are capable of producing sound which originates from the larynx or the voice box in the neck.
What is vibration in physics class 8?
What is vibration definition Class 8?
A repeated back and forth motion is called vibration. When an object moves back and forth continuously, we say that it is making vibration. When a swing moves back and forth repeatedly, we say that swing is making vibration or oscillation.
What is vibration in sound Class 8?
Vibration is the to and fro or back and forth motion of an object. What is the length of vocal cords in men ? Answer: The vocal cords in men are about 20 mm long.
What is vibration Ncert?
13.5 Amplitude, Time Period. and Frequency of a. Vibration. We have learnt that the to and fro motion of an object is known as vibration. This motion is also called oscillatory motion.
What is vibration in sound physics?
Sound wave consists of vibrating particles. … The particles moving a part of a sound wave vibrate back and forth in the direction that the sound wave is travelling, creating areas where the particles are more bunched up, high pressure, and areas where the particles are more spread out, low pressure.
What is meant by vibration question and answer?
Vibration means quickly moving back and forth (or up and down) about a point of equilibrium. The vibration may be periodic (having a pattern) or random. … This vibration will send sound waves to the ear and to the brain. In structural engineering including earthquake engineering, vibrations may be bad.
What is vibration frequency?
Frequency. … The number of cycles that a vibrating object completes in one second is called frequency. The unit of frequency is hertz (Hz). One hertz equals one cycle per second.
What is vibration short answer?
Vibration means quickly moving back and forth (or up and down) about a point of equilibrium. The vibration may be periodic (having a pattern) or random. Something that is vibrating may shake at the same time. … This vibration will send sound waves to the ear and to the brain.
What is meant by frequency of vibration?
Frequency. A vibrating object moves back and forth from its normal stationary position. … The number of cycles that a vibrating object completes in one second is called frequency. The unit of frequency is hertz (Hz). One hertz equals one cycle per second.