The dimensions of momentum are represented as
Correct answer: A. [MLT-1]
- A. [MLT-1]
- B. [ML2T-1]
- C. [MLT-2]
- D. [ML-1T]
Explanation
Momentum is defined as the product of mass and velocity, so its dimensions are given by multiplying the dimensions of mass (M) and velocity (LT-1). Therefore, the dimension of momentum is [MLT-1]. Option A correctly represents these dimensions. Option B [ML2T-1] could refer to a different physical concept like angular momentum, Option C [MLT-2] represents force, and Option D [ML-1T] does not correspond to a recognized physical quantity.
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About Dimensional Analysis
Dimensional analysis expresses physical quantities through fundamental dimensions such as mass, length and time. It checks dimensional consistency, helps derive relations and converts between unit systems, but cannot determine numerical constants or distinguish quantities with identical dimensions. Dimensional formulae must not be confused with complete physical units.
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