Questions
Two pulses travel in mutually opposite directions in a string with a speed of 2.5 cm/s as shown in the figure. Initially the pulses are 10cm apart. What will be the state of the string after two seconds
detailed solution
Correct option is C
After two seconds each wave travel a distance of 2.5 × 2 = 5 cm i.e., the two pulses will meet in mutually opposite phase and hence the amplitude of resultant will be zero.Talk to our academic expert!
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A wire having a linear density of 5 g/m is stretched between two rigid supports with a tension of 450 N. It is observed that the wire resonates at a frequency of 420 Hz. The next highest frequency at which the same wire resonates is 490 Hz. Find the length of the wire. (in m)
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