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Question:

A dimensionless quantity

  • A

    has No Unit

  • B

    must Have A Unit

  • C

    cannot Exist

  • D

    might Have A Unit

Posted by: Sheo Shankar Mishra on: 17 Nov, 2017
Answer

No unit  Option A

Answer
A dimensionless quantity may have dimensionless unit Hence the answer to this question is D
Answer

Dimension is defined in terms of units only.So dimensionless quantities dont have any units.Typically all measurements are relative yet their reference is either not considered/assumed as 0,viz. our height is 1.70m wrt ground etc. yet we have few measurements which suggest ratios and used as it is. Example - Relative density which is ratio of two densities making it unitless ,thus dimensionless.

Answer
Dimensionless quantity is a ratio of 2 physical quantity so logically it must not have any unit since ratio is division and in division unit of physical quantity is also cancelled for ex-ratio of two forces. F1/F2
Answer

Dimensionless quantity is one that has no unit.

Therefore, option A is correct.

Answer

Dimensionless quantities are defined as quantities without units.

Hence option (A) has no unit

Answer

DIMENSIONLESS QUANTITY HAS NO UNITS

Answer

A dimensionless qunatityhas no unit

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