Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Physics Waves The speed of a travelling wave
Which of the following equations represents a travelling wave?
1
y = Aexcos(ωt - θ)
2
\({\rm{y = A}}{{\rm{e}}^{{\rm{ - }}{{\rm{x}}^{\rm{2}}}}}{\rm{cos}}\left( {{\rm{vt + \theta }}} \right)\)
3
y = Asin (15x - 2t))
4
More than one of the above
5
None of the above