EASY
11th ICSE
IMPORTANT
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The physical quantities not having same dimensions are :

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Important Questions on Dimensional Analysis

EASY
11th ICSE
IMPORTANT

A particles with initial velocity u is moving with uniform acceleration a. The distance moved by the particle in the tth second is given by s=u+12 a2t-1. The dimension of s must be :

 

EASY
11th ICSE
IMPORTANT

The time dependent of a physical quantity P is given by P=P0e-αt2, where α is a constant and t is time. The constant α

 

MEDIUM
11th ICSE
IMPORTANT

The ground-state energy of electron in hydrogen atom is given by E=-R h c, where R is Rydberg constant. The dimension of R are :

 

EASY
11th ICSE
IMPORTANT

If force =αβ3+density, then the dimensions of α and β will be:

 

EASY
11th ICSE
IMPORTANT

The notations E, m, J and G repersent energy, mass, angular momentum and gravitational constant respectively. E J2/ m5 G2 has the dimensions of :

 

HARD
11th ICSE
IMPORTANT

If force F, velocity V and time T are taken as fundamental units, the dimensions of mass are :

 

HARD
11th ICSE
IMPORTANT

The variation of pressure P with distance z  is given by

                                                                   P=αβe-αz/,

where α,β are constants, k is Boltzmann constant and θ is temperature. The dimensional formula of β will be:

 

HARD
11th ICSE
IMPORTANT

Choose the correct statement (s) :