NEET Physics Question - Unit And Dimensions

Assertion (A): In mechanics the method of dimensions can't be applied to derive formula of a physical quantity which depends on more than three physical quantities.

Reason (R): We can derive relation of a physical quantity with other physical quantities out of which two have same dimensions.

Both (A) & (R) are true and the (R) is the correct explanation of the (A)

Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

(A) is true but (R) is false

Both (A) and (R) are false

Solution:

In mechanics, we have only three base dimensions (M, L, T). Thus, we cannot determine more than three independent exponents. If two quantities have the same dimensions, they cannot be resolved independently, making R false.

Rankers Physics

Limitations of dimensional analysis

Solution:

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