Q. The equation of a wave is 3cos π (50t-x). the wavelength of the wave is
A) 3 unit
B) 2 unit
C) 50 unit
D) 47 unit
Explanation
(b) Given equation y=3cos π(50t-x)
Comparing with y=a cos (ωt-kx)
$K = \pi \Longrightarrow \frac{2\pi}{\lambda} = \pi$
$\lambda$=2 units.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.