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Units and Measurements — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsUnits and Measurements1 Mark
Question
Express a joule in terms of fundamental units.
✓

Answer

$[\text{Energy}]=[\text{ML}^2\text{T}^{-2}],$ hence 1 joule $=1 \mathrm{~g} \times 1 \mathrm{~m}^2 \times 1 \mathrm{~s}^{-2}=1 \mathrm{~kg} \mathrm{~m}^2 \mathrm{~s}^{-2}$

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