The equation of a standing wave, produced on a string fixed at both ends, is

y = (04 cm) sin(0314 cm1)x] cos[(600π s1)t].


What could be the smallest length of the string?


We can write the equation of standing wave as,


y = (04 cm) sin(0314 cm1)x] cos[(600π s1)t].


So, k=0.314=


We know that,


Now,


For, smallest length, n=1, putting the value of ,


So, L= cm


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