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Figure shows two wave opulses at t=0 tra...

Figure shows two wave opulses at t=0 travelling on a string i opposite directions with the same wave speed `50 cms^-1`. Sketch the shape of the string at t=4ms, 6ms, 8ms and 12 ms.
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The correct Answer is:
A
The distance travelled by the pulses are shown below:
`t=4ms=4xx10^-3s,`
`s=vt=50xx10xx4xx10^-3`
=2mm
`t=8ms=8xx10^-3s`
`s=vt=50xx10xx8xx10^-3`
=4mm
`t=6ms=6xx10^-3s,`
`s=50xx10xx6xx10^-3`
=3mm
t=12ms
`=12xx10^-3s, `
`s=50xx10xx2xx10^-3`
`=6mm`
The shape of the string at different times are shown in the figure.
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HC VERMA-WAVE MOTION AND WAVES ON A STRING-Exercises
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  11. A one-metre long stretched string having a mass of 40 g is attached to...

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  12. A wire, fixed at both ends is seen to vibrate at a resonant frequency ...

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  13. A string, fixed at both ends, vibrates in a resonant mode with a separ...

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  14. A 660 Hz tuning fork sets up vibration in a string clamped at both end...

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  15. A particular guitar wire is 30.0 cm long and vibrates at a frequency o...

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  16. A steel wire fixed at both ends has a fundamental frequency of 200 Hz....

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  17. Three resonant frequencies of a string are 90, 150 and 210 Hz. (a) Fin...

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  18. Two wires are kept tight between the same pair of supports. The tensio...

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  19. A uniform horizontal rod of length 40 cm and mass 1.2 kg is supported ...

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