Question

The equation y = a cos2 (2pi nt - 2 pi x/lamda) represents a wave with
a) amplitude a , frequency n and wavelength lamda
​b) amplitude a . frequency 2n and wavelength 2 lamda
c) amplitude a/2 , frequency 2n and wavelength lamda
d) amplitude a/2 , frequency 2nand wavelength lamda /2

Answer 1

2nand for that under ground name of the behave