MCQ
Loudness of a sound is determined by its:
- ✓Intensity
- BFrequency of vibration
- CRatio of amplitude and frequency of the vibration.
- DProduct of amplitude and frequency of vibration.
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Column I
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Column II
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$P$
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Nylon
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$(i)$
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Burns quickly with a smell of burning paper.
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$Q$
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Wool
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$(ii)$
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Burns with sooty flame, fabric shrinks and black beads are formed.
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$R$
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Acrylic
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$(iii)$
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Shrinks after exposure to flame, forms hard beads and gives a smell of burning hair.
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$S$
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Rayon
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$(iv)$
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Burns slowly with a smell of burning hair.
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