Name any two derived physical quantities

Physical quantity

Name a derived physical quantity with its Sl unit.

Assertion: The units of some physical quantities can be expressed as combination of the base units. ltbr. Reason: We need only a limited number of units for expressing the derived physical quantities.

How do fundamental quantities differ from derived physical quantities?

Give an example of two physical quantities such that their scalar product and vector product represent two different physical quantities .

Assertion if two physical quantities have same dimension, then they can be certainly added or subtracted because Reason if the dimension of both the quantities are same then both the physical quantities should be similar .

Name three physical quantities having the same dimensions.

Name three physical quantities without dimensions.

State with reasons, whether the following algebraic operations with scalar and vector physical quantities are meaningful: (i) Adding any two scalars (ii) Adding a scalar to a vector of the same dimensions (iii) Multiplying any vector by any scalar (iv) Multiplying any two scalars (v) Adding any two vectors

In Column I physical quantities corresponding to hydrogen and hydrogen like atom are given. In column II, powers of principal quantum number n are givem on which thosee physical quantities depend. Match the two columns.