Question

Which among the following quantity is a dimensionless quantity?

1 गुण

Energy

Mass

Force

pi (π)

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Answer 1

Answer:

All pure numbers are dimensionless quantities, for example 1, i, π, e, and φ. Units of number such as the dozen, gross, googol, and Avogadro's number may also be considered dimensionless.

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Answer 2

Pie (π) is a dimensionless quantity.

Pie is a dimensionless quantity whose value is 22/7.

Energy :-

• Energy is defined as the capacity to do work.
• Energy is a dimensional quantity having dimension M¹ L² T‐²
• Si unit of energy is Joule.

Mass :-

• Mass is the fundamental property of matter.
• Mass is a dimensional quantity having dimension M¹L⁰T⁰
• SI unit of Mass is Kilogram (Kg)

Force:-

• Force is the push or pull of an object.
• Force is a dimensional quantity having dimension M¹L¹T‐²
• SI unit of Force is Newton.

So, The correct answer is Pie (π).