1.

Assertion (A): The dimensional formula of a physical quantity is same in any system of units. Reason (R) : Dimensional formula is independent of system of units. (1) Both A and R are true and R is the correct explanation of A (2) Both A and R are true and R is not the correct explanation of A (3) A is true but R is false (4) A is false but R is true​

Answer»

Assertion :

(A) The dimensional formula of a physical quantity is the same in any SYSTEM of units.

Reason (R): Dimensional formula is INDEPENDENT of the system of units.

Explanation:

A:

  • All physical quantities can be expressed in terms of seven basic quantities LIKE mass, length, time, temperature, electric current, luminous intensity, and quantity of substance.
  • The dimensions of a physical quantity and the dimensions of its unit are similar.

B:

  • The dimensions of a physical quantity are independent of the system of units used to MEASURE the quantity.

Hense both A and R are true & R is the correct explanation of A.

Correct option is A


Discussion

No Comment Found

Related InterviewSolutions