ICSE /Class 10
Physics MCQ Based On Types of vibrations and resonance
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ICSE Class 10 Physics Types of vibrations and resonance
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At sea level, at a temperature of 21 degrees Celsius (70 degrees Fahrenheit) and under normal atmospheric conditions, the speed of sound is 344 m/s
Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing. Ultrasound is not different from "normal" sound in its physical properties, except that humans cannot hear it.
The periodic vibration of a body in absence of external force is called natural vibration of a body
The periodic vibration of a body of decreasing amplitude in presence of external resistive force are called damped vibrations.
The law of reflection of sound waves states that the angle of incidence is always equal to the angle of reflection. But unlike reflection of light on a highly smooth surface, in the reflection of the sound wave, a part of the incident wave gets transmitted to the medium where it hits.
When there is no resistance of the medium, then that vibrations are called natural vibrations.
When the frequency of the externally applied periodic force on a body is equal to its natural frequency, the body readily begins to vibrate with an increased amplitude.
When sound wave goes from one medium to another medium this phenomenon is called law of refraction of sound
Loudness depends on amplitude of the sound
When the frequency of the externally applied periodic force on a body is equal to its natural frequency, the body readily begins to vibrate with an increased amplitude.
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