1. [F][A][T] 2. [F][A][ T² ] 3. [F][A][ T⁻¹ ] 4. [F][ A⁻¹ ][T]

If force [F], acceleration [A] and time [T] are chosen as the fundamental physical quantities. Find the dimensions of energy.

1. [F][A][T]

2. [F][A][\(T^2\)]

3. [F][A][\(T^{-1}\)]

4. [F][\(A^{-1}\)][T]

Doubtly Asked 30 Oct 2026 NEET UG 2021 Practice test neet Save WhatsApp Report

Best answer

Answer: 2. [F][A][\(T^2\)]

Key idea: write energy as work = force × distance, and express the distance through acceleration and time.

\(L = \tfrac12 A T^2 \Rightarrow [L]=[A][T^2]\)

\([E]=[F][L]=[F][A][T^2]\). Option 2.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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