SI units, dimensional analysis, significant figures and error analysis.
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Q1 · Units and Measurements · EASY
The SI unit of luminous intensity is:
Q2 · Dimensional Analysis · HARD
If velocity (v), acceleration (a), and force (F) are chosen as fundamental quantities, the dimensional formula for mass would be:
Q3 · Dimensional Analysis · EASY
The dimensional formula of force is:
Q4 · Errors and Uncertainty · HARD
Two resistances R₁ = (10 ± 0.2) Ω and R₂ = (15 ± 0.3) Ω are connected in series. The equivalent resistance with error is:
Q5 · Units and Measurements · HARD
If the unit of length is doubled and the unit of time is halved, the unit of energy will become: