Question

In the relation y = a cos (wt - kx), the dimensional formula for k is
(1) [M°L-1T-1] (2) [MºLT-11 (3) [ML-T03 (4) [MºLT]


please explain the answer
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Answer 1

Answer:

↪ In the relation y = a cos (wt - kx), the dimensional formula for k is

(1) [M°L-1T-1]

(2) [MºLT-11 $\bold \red{☑}$

(3) [ML-T03

(4) [MºLT]