What is dimensional analysis ? Write limitation of dimensional analysis.
What is dimensional analysis ? Write limitation of dimensional analysis.
$(1)$ In the dimensional equations containing $\mathrm{M}, \mathrm{L}$ and $\mathrm{T}$, we get at the best only three equations by equating the indices of $\mathrm{M}, \mathrm{L}$ and $\mathrm{T}$. Hence this method is of no avil in deducting the exact form of a physical relation which happens to depend upon more than three quantities.
$(2)$ The information about dimensionless constant cannot be obtained.
$(3)$ The equations containing exponential trigonometric functions lie quite outside the preview of this method.
$(4)$ This method is of no use if a constant of proportionally is not dimensionless.
Similar Questions
Which of the following relation cannot be deduced using dimensional analysis? [the symbols have their usual meanings]
Which of the following relation cannot be deduced using dimensional analysis? [the symbols have their usual meanings]
The dimensional formula for impulse is
The dimensional formula for impulse is
The fundamental physical quantities that have same dimensions in the dimensional formulae of torque and angular momentum are
The fundamental physical quantities that have same dimensions in the dimensional formulae of torque and angular momentum are
Dimensions of magnetic field intensity is
Dimensions of magnetic field intensity is
Match List$-I$ with List$-II$
List$-I$
List$-II$
$(a)$ $h$ (Planck's constant)
$(i)$ $\left[ M L T ^{-1}\right]$
$(b)$ $E$ (kinetic energy)
$(ii)$ $\left[ M L ^{2} T ^{-1}\right]$
$(c)$ $V$ (electric potential)
$(iii)$ $\left[ M L ^{2} T ^{-2}\right]$
$(d)$ $P$ (linear momentum)
$( iv )\left[ M L ^{2} I ^{-1} T ^{-3}\right]$
Choose the correct answer from the options given below
Match List$-I$ with List$-II$
| List$-I$ | List$-II$ |
| $(a)$ $h$ (Planck's constant) | $(i)$ $\left[ M L T ^{-1}\right]$ |
| $(b)$ $E$ (kinetic energy) | $(ii)$ $\left[ M L ^{2} T ^{-1}\right]$ |
| $(c)$ $V$ (electric potential) | $(iii)$ $\left[ M L ^{2} T ^{-2}\right]$ |
| $(d)$ $P$ (linear momentum) | $( iv )\left[ M L ^{2} I ^{-1} T ^{-3}\right]$ |
Choose the correct answer from the options given below
- [JEE MAIN 2021]