Let [ε0] denotes the dimensional formula of the permittivity of the vacuum and [μ0] that of the permeability of the vacuum. If M = mass, L = length, T = Time and I = electric current, then 

1. [ε0]=M1L3T2I

2. [ε0]=M1L3T4I2

3. [μ0]=MLT2I3

4. [μ0]=ML2T1I

Subtopic:  Dimensions |
 79%
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Dimensions of CR are those of 

(1) Frequency

(2) Energy

(3) Time period

(4) Current

Subtopic:  Dimensions |
 63%
From NCERT
AIIMS - 1999
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The physical quantity that has no dimensions 

(1) Angular Velocity

(2) Linear momentum

(3) Angular momentum

(4) Strain

Subtopic:  Dimensions |
 88%
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ML1T2 represents 

(1) Stress

(2) Young's Modulus

(3) Pressure

(4) All the above three quantities

Subtopic:  Dimensions |
 82%
From NCERT
PMT - 2001
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Dimensions of magnetic field intensity is 

(1) [M0L1T0A1]

(2) [MLT1A1]

(3) [ML0T2A1]

(4) [MLT2A]

Subtopic:  Dimensions |
 63%
From NCERT
PMT - 1997
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The force F on a sphere of radius ‘a’ moving in a medium with velocity ‘v’ is given by F=6πηav. The dimensions of η are 

(1) ML1T1

(2) MT1

(3) MLT2

(4) ML3

Subtopic:  Dimensions |
 81%
From NCERT
PMT - 1997
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Which physical quantities have the same dimensions?

(1) Couple of force and work

(2) Force and power

(3) Latent heat and specific heat

(4) Work and power

Subtopic:  Dimensions |
 58%
From NCERT
PMT - 1997
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Two quantities A and B have different dimensions. Which mathematical operation given below is physically meaningful?

(1) A/B

(2) A + B

(3) AB

(4) None

Subtopic:  Dimensions |
 78%
From NCERT
PMT - 1997
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Given that v is speed, r is the radius and g is the acceleration due to gravity. Which of the following is dimensionless?

(1) v2/rg

(2) v2r/g

(3) v2g/r

(4) v2rg

Subtopic:  Dimensions |
 83%
From NCERT
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The physical quantity which has the dimensional formula M1T3 is 

(1) Surface tension

(2) Solar constant

(3) Density

(4) Compressibility

Subtopic:  Dimensions |
 61%
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