A) 2.0
B) 4.0
C) 0.5
D) 1.0
Correct Answer: C
Solution :
The equation of wave at any time is obtained by putting \[X=x-vt\] \[y=\frac{1}{1+{{x}^{2}}}=\frac{1}{1+{{(x-vt)}^{2}}}\] ..........(i) We know at t = 2 sec, \[y=\frac{1}{1+{{(x-1)}^{2}}}\] .........(ii) On comparing (i) and (ii) we get \[vt=1\] \[V=\frac{1}{t}\] As t = 2 sec \[\therefore \]\[V=\frac{1}{2}=0.5m/s.\]You need to login to perform this action.
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