Difficulty: Easy
Correct Answer: all the above.
Explanation:
Introduction:
SI (Système International) defines seven base quantities forming the foundation for all derived units in science and engineering. Recognizing which physical quantities are base quantities is essential for dimensional analysis, unit conversion, and checking the consistency of formulas and results.
Given Data / Assumptions:
Concept / Approach:
If each option lists one or more base quantities, then the inclusive choice that acknowledges all correct items should be selected. The groupings in the options each contain valid base quantities.
Step-by-Step Solution:
Verification / Alternative check:
Dimensional symbols for base quantities are typically L, M, T, I, Θ, N, and J (for length, mass, time, electric current, temperature, amount of substance, luminous intensity respectively). Each listed quantity maps to a recognized base dimension.
Why Other Options Are Wrong:
Common Pitfalls:
Final Answer:
all the above.
Discussion & Comments