Physics

A  dimensions quantity......................


ANSWER

may have a unit


SOLUTION

A dimensionless quantity has no dimensions but it may or may not have units. Two very common examples of dimensionless quantities are refractive index which does not have any units and angle which has units (degrees, radians).

So, the correct answer would be option(c).

View Answers

You're just one step away

Create your Digital Resume For FREE on your name's sub domain "yourname.wcard.io". Register Here!


Single Correct Medium Published on 18th 08, 2020
Next Question
Questions 244531
Subjects 8
Chapters 125
Enrolled Students 199
Enroll Now For FREE

Realted Questions

Q1 Single Correct Medium
The physical quantities not having same dimensions are :
  • A. torque and work
  • B. momentum and Plancks constant
  • C. stress and Youngs modulus
  • D. speed and $$\left( { \mu }_{ 0 }{ \epsilon }_{ 0 } \right) ^{ -1/2 }$$

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q2 Subjective Medium
The wavelength of light of a particular colour is 5800 $$\mathring{A}$$. What is its order of magnitude in meter?

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q3 Single Correct Medium
If we choose velocity V, acceleration A and force F as the fundamental quantities, then the angular momentum in terms of V,A and F would be :
  • A. $$[FA^{-1}V]$$
  • B. $$[FV^{3}A^{-2}]$$
  • C. $$[FV^{2}A^{-1}]$$
  • D. $$[ML^2T^{-1}]$$

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q4 Single Correct Medium
The dimensions of universal gravitational constant are ___________.
  • A. $$\left[ { L }^{ 1 }{ M }^{ 0 }{ T }^{ 0 } \right] $$
  • B. $$\left[ { L }^{ 2 }{ M }^{ 1 }{ T }^{ 0 } \right] $$
  • C. $$\left[ { L }^{ -1 }{ M }^{ 1 }{ T }^{ -2 } \right] $$
  • D. $$\left[ { L }^{ 3 }{ M }^{ -1 }{ T }^{ -2 } \right] $$

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q5 Single Correct Medium
What are the number of significant figures in the measurement $$ 0.0040\times10^{-15}m $$?
  • A. 1
  • B. 2
  • C. 4
  • D. 5

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer