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Identify the primary quantity from the following.

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in Physics – Class 11 by (74.2k points)
Identify the primary quantity from the following.

(a) Mass

(b) Density

(c) Speed

(d) Volume

This question was posed to me in a job interview.

This interesting question is from Dimensional Analysis and its Applications topic in section Units and Measurements of Physics – Class 11

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Best answer
Right answer is (a) Mass

For explanation I would say: Mass is one of the 7 primary quantities in the SI system. Density is dependent on mass and volume. Speed is dependent on length and time. And volume is dependent on length as its cube.

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