Question

Which of the following expressions is that of a harmonic progressive wave?

• A. $a\,sin\omega\,t$
• B. $a\,sin\,(\omega\,t)cos kx$
• C. $a\,sin(\omega\,t-kx)$
• D. $acoskx$

Answer 1

Answer: (A)

$a\,sin\omega\,t$

Answer 2

Answer (a) $a\,sin\omega\,t$