A)
B)
C)
D)
Correct Answer: A
Solution :
We can find the correct graph by putting different values of t in the given expression \[x=A\cos (\omega t)\] At \[t=0,x=+A\] and \[t=\frac{T}{4},x=A\cos \left( \frac{2\pi }{T}\times \frac{T}{4} \right)=A\cos (\pi /2)=0\] Again \[t=\frac{T}{2},x=A\cos \left( \frac{2\pi }{T}\times \frac{T}{2} \right)=A\cos \pi =-A\] We can see that, only graph (i) will satisfy the above resultsYou need to login to perform this action.
You will be redirected in
3 sec