Physics
At resonance, a loud sound is heard because the body vibrating with a large …………… sends forth a large amount of energy in the medium.
- amplitude
- frequency
- wavelength
- time period
Sound
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Answer
amplitude
Reason — Resonance amplifies the vibrations of the system, resulting in larger oscillations or amplitudes. This increased amplitude corresponds to a greater displacement of particles in the medium, which leads to a louder sound being produced.
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Column X shows the kind of vibrations and column Y shows their examples.
X Y (A) Natural vibrations (1) A tuning fork when stroked on a rubber pad. (B) Damped vibrations (2) When a guitarist plucks or strums the guitar strings with his/her fingers. (C) Forced vibrations (3) When a troop crosses a suspension bridge. (D) Resonant vibrations (4) A load suspended from a spring. Choose the correct pairing:
(a) A—(4) B—(2) C—(3) D—(1)
(b) A—(4) B—(1) C—(2) D—(3)
(C) A—(4) B—(3) C—(1) D—(2)
(d) A—(2) B—(3) C—(4) D—(1)