নিচের কোন সমীকরণটি সরল দোলকের অগ্রগামী তরঙ্গকে প্রকাশ করে?

A \( a \sin{\omega} t \)

B \( a \sin{\left ( \omega t \right )} \cos{\left ( k t \right )} \)

C \( a \sin{\left ( \omega t - k x \right )} \)

D \( a \cos{k} x \)

Solution

Correct Answer: Option C

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