EASY
11th West Bengal Board
IMPORTANT
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What are the limitations of dimensional analysis?

Important Questions on Dimensions of Physical Quantities and Dimensional Analysis

EASY
11th West Bengal Board
IMPORTANT
Can we choose any set of physical quantity to express the dimensions of other physical quantities?
MEDIUM
11th West Bengal Board
IMPORTANT
What do you understand by the dimension of a physical quantity? Explain the principle of dimensional homogeneity of physical equations with suitable examples.
HARD
11th West Bengal Board
IMPORTANT

State and explain, with examples, the uses of dimensional equations. What are the limitations of dimensional analysis?

 

EASY
11th West Bengal Board
IMPORTANT

Find the dimensions of linear momentum p, Some of the relations involving the above quantities are:

p=mv, v=1T, P=FA, α=ω2-ω1t2-t1, r=F.r, I=mr2, c=Qm.θγ=V2-V1V1×(θ2-θ1), PVT=R. The symbols m, v, r, A, V, F, t, θ, T  are respectively mass, velocity, distance, area, volume, Force, time, temperature, absolute temperature. 

EASY
11th West Bengal Board
IMPORTANT

Find the dimensions of frequency v, Some of the relations involving the above quantities are:

p=mv, ν=1T, P=FA, α=ω2-ω1t2-t1, r=F·r, I=mr2, c=Qm.θγ=V2-V1V1×θ2-θ1, PVT=R. The symbols m, v, r, A, V, F, t, θ, T  are respectively mass, velocity, distance, area, volume, Force, time, temperature, absolute temperature. 

EASY
11th West Bengal Board
IMPORTANT

Find the dimensions of pressure p. Some of the relations involving the above quantities are:

p=mv, ν=1T, P=FA, α=ω2-ω1t2-t1, r=F·r, I=mr2, c=Qmθγ=V2-V1V1×(θ2-θ1), PVT=R. The symbols m, v, r, A, V, F, t, θ, T  are respectively mass, velocity, distance, area, volume, Force, time, temperature, absolute temperature. 

EASY
11th West Bengal Board
IMPORTANT

Find the dimensions of angular acceleration a Some of the relations involving the above quantities are:

p=mv, ν=1T, P=FA, α=ω2-ω1t2-t1, r=F·r, I=mr2, c=Qm.θγ=V2-V1V1×(θ2-θ1), PVT=R. The symbols m, v, r, A, V, F, t, θ, T  are respectively mass, velocity, distance, area, volume, Force, time, temperature, absolute temperature. 

EASY
11th West Bengal Board
IMPORTANT

Find the dimensions of Torque t, Some of the relations involving the above quantities are:

p=mv, ν=1T, P=FA, α=ω2-ω1t2-t1, r=F·r, I=mr2, c=Qm.θγ=V2-V1V1×(θ2-θ1), PVT=R. The symbols m, v, r, A, V, F, t, θ, T  are respectively mass, velocity, distance, area, volume, Force, time, temperature, absolute temperature.