**Assertion:** In y=A ( t-kx), ( t-kx) is dimensionless. **Reason:** Dimension of is [M^0L^0T^1].

JEE Main Physics question

**Assertion:** In , is dimensionless. **Reason:** Dimension of is .

(A)Assertion is True, Reason is True; Reason is correct explanation for Assertion
(B)Assertion is True, Reason is True; Reason is not correct explanation for Assertion
(C)Assertion is True, Reason is FalseCorrect
(D)Assertion is False, Reason is True

Answer: (C)

is the argument of a sine function, so it must be dimensionless — the Assertion is

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Question ID VK-157508