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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When sound wave goes from one medium to another medium its speed wil change.
When sound wave goes from one medium to another medium this phenomenon is called law of refraction of sound
The periodic vibration of a body in absence of external force is called natural vibration of a body
Loudness depends on amplitude of the sound
The periodic vibration of a body of decreasing amplitude in presence of external resistive force are called damped vibrations.
The fact that you can hear sounds around corners and around barriers involves both diffraction and reflection of sound. Diffraction in such cases helps the sound to "bend around" the obstacles.
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 there is no resistance of the medium, then that vibrations are called natural vibrations.
f∝1/l
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.
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