First slide

Dimensions of physical quantities

Question

Assertion: Method of dimension cannot be used for deriving formulae containing trigonometrical ratios.
Reason: This is because trigonometrical ratios have no dimensions.

Moderate

A

Both Assertion and Reason are true and the Reason is correct explanation of the Assertion.
B

Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
C

Assertion is true, but the Reason is false
D

Assertion is false but the Reason is true.

Solution

Method of dimensions cannot be used for deriving formulae containing trigonometrical ratios as trigonometrical ratios are dimensionless.

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