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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA rope of uniform mass per unit length \(\mu\) is suspended from the ceiling, hanging under its own weight. If a small transverse pulse is formed at its lower end A, it travels upward with a local speed \(v=\sqrt {\dfrac{\text{tension}}{\text{mass/length}}}\).
The speed of the pulse is:
1. | maximum at A, minimum at O |
2. | minimum at A, maximum at O |
3. | uniform |
4. | minimum at A and O, maximum in the middle |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. | \({ 1 \over 2L} \sqrt {T\over m}~~~~~~~~~~~~~~\) | 2. | \(\frac{1}{4 L} \sqrt{\frac{T}{m}}~~~~~~~~~~~~~~\) |
3. | \(\frac{1}{2} \sqrt{\frac{TL}{2m}}\) | 4. | \(\frac{1}{2} \sqrt{\frac{T}{m L}}\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA steel wire \(0.72~\text{m}\) long has a mass of \(5\times10^{-3}~\text{kg}\). If the wire is under tension of \(60~\text{N}\), the speed of transverse waves on the wire will be:
1. \(85~\text{m/s}\)
2. \(83~\text{m/s}\)
3. \(93~\text{m/s}\)
4. \(100~\text{m/s}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA wave travelling along a string is described by, \(y(x,~t)=0.005 ~\sin(80.0x-3.0t),\) in which the numerical constants are in SI units. The displacement \(y\) of the wave at a distance \(x = 30.0\) cm and time \(t=20\) s is:
1. \(0.5\) mm
2. \(5\) mm
3. \(5\) m
4. \(5\) cm
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology