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Units And Measurement

Question

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Does the angular momentum of electron remain conserved when electron rotates around nucleus?

Solution

Yes, the angular momentum remains conserved because the torque exerted by electrostatic force on an electron is zero.

Some More Questions From Units and Measurement Chapter

What are the two main required characteristics of a unit?

Can we use same units for different physical quantities?

Can we use different units to measure same physical quantity?

To measure a physical quantity X, the unit U is repeatedly used for n times. What is the magnitude of physical quantity?

Does the numerical factor in the quantitative measurement depend on the system of unit used?

Is one unit sufficient to measure a physical quantity?

Can a physical quantity have two or more units? Give example.

What are fundamental quantities?

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