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Q.

The equation of a wave on a string of linear mass density 0.04  kgm1 is given by Y=0.02(m) sin[2π(t0.04(sec)x0.5(m))] . The tension in the string is

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a

12.5 N     

b

0.5 N      

c

4.0 N         

d

6.25 N

answer is D.

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Detailed Solution

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v=Tμ=ωk=coefficient of 't'  coefficient of 'x'

T0.04=2π/0.042π/0.5=0.50.04=252

T=(252)2×0.04

T = 6.25 N

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