A car accelerates uniformly from 18 km/h to 36 km/h in 5 seconds. The distance covered is MCQ with Answer and Explanation
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Alpha particles consist of
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A current of 0.5 A flows through a 100 Ω resistor. Voltage across it is
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Torque dimensions same as:
Correct Answer: Option B
Explanation:
Torque τ = r×F: [L][MLT⁻²] = [ML²T⁻²]. Work W = F·d: same dimensions. Physically distinct: torque (vector, rotational), work (scalar, energy). Memory tip: 'Torque and work: same [ML²T⁻²]; different physical meaning'. Dimensional analysis frequently tested in competitive exams.
Torque τ = r×F: [L][MLT⁻²] = [ML²T⁻²]. Work W = F·d: same dimensions. Physically distinct: torque (vector, rotational), work (scalar, energy). Memory tip: 'Torque and work: same [ML²T⁻²]; different physical meaning'. Dimensional analysis frequently tested in competitive exams.
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