Question Detail

PHY 101 Physical Quantities, Units, and Dimensions Objective Question

Question

If a physical quantity is dimensionless, its dimensional formula is represented as
Options
A 0
B 1
C M⁰L⁰T⁰
Correct Answer
D M L T
Correct Answer

Option C is the correct answer.

Detailed Explanation

A dimensionless quantity has no mass, length, or time dimensions. Its dimensional formula is expressed by raising all fundamental dimensions to the power of zero, i.e., M⁰L⁰T⁰. This is often simply stated as 'dimensionless'.

Hint

How would you write a number that has no dependence on mass, length, or time using the M, L, T notation?

Question Info