Physics

# Is it possible to have dimensionless and unitless physical quantities?

##### SOLUTION
Yes, there are many such quantities which have no dimension as well as no unit. For example.
1. A strain is dimensionless and unitless.
2. Angle and solid angle also belong to this category.

You're just one step away

Subjective Medium Published on 18th 08, 2020
Questions 244531
Subjects 8
Chapters 125
Enrolled Students 197

#### Realted Questions

Q1 Single Correct Medium
The melting point of pure ice is
• A. $23.5^o C$
• B. $100^o C$
• C. 273.15 K
• D. 100 K

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q2 Single Correct Medium
Specific gravity has ___ dimensions in mass, ___ dimensions in length and ___ dimensions in time.
• A. 0, 0, 0
• B. 0, 1, 0
• C. 1, 0, 0
• D. 1, 1, 3

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q3 Single Correct Medium
The number of significant figures reduced in

• B. Substraction
• C. Multiplication
• D. division

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q4 Single Correct Medium
In a system of units, the Plancks constant ($h$), the gravitational constant ($G$) and the speed of light($c$) are taken as the fundamental units. The dimensional formula of force in this system of units?
• A. $h^{0}G^{-1}c^{4}$
• B. $h^{-1}G^{0}c^{4}$
• C. $h^{-1}G^{4}c^{0}$
• D. $h^{4}G^{2}c^{-2}$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q5 Subjective Medium
Give two example of dimension less variables.

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020