Correct Answer - B
General equation of plane prograssive wale is given by
`y=a sin (kx+omegat)" "…(i)`
Given equation
`y=0.0015sin (62.4x+316t)" "…(ii)`
Comparing Eqs. (i) and (ii), we get
`k=62.4`
`therefore (2pi)/(lamda)=62.4`
`lamda=(2pi)/(62.4)=0.1` unit