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Physics-SI Units

NEET Physics SI Units MCQ Question

Type: MCQ-numerical-Medium-Class 11

If the unit of mass is redefined as α\alpha kg, the unit of length as β\beta m, and the unit of time as γ\gamma s, what is the magnitude of 1 joule in terms of these new units?

A

1 α−1β−2γ2\alpha^{-1} \beta^{-2} \gamma^2

B

1 αβ2γ−2\alpha \beta^2 \gamma^{-2}

C

1 α−1β2γ−2\alpha^{-1} \beta^2 \gamma^{-2}

D

1 αβ−2γ2\alpha \beta^{-2} \gamma^2

Correct Answer

Option A

Detailed Explanation

A joule is defined as 1 kg m² s⁻². By substituting the new units, 1 J becomes 1 α−1β−2γ2\alpha^{-1} \beta^{-2} \gamma^2.

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