The time dependence of a physical quantity $P$  is given by $P\, = \,{P_0}\,{e^{ - \alpha {t^2}}}$ where $\alpha $ is a constant and $t$ is the time then constant $\alpha $ is
  • A
    Dimension less
  • BDimensions of  $T^{-2}$
  • CDimensions of $P$
  • DDimensions of  $T^2$
Easy
art

Download our app
and get started for free

Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*

Similar Questions

  • 1
    Dimensions of potential energy are
    View Solution
  • 2
    The potential energy $u$ of a particle varies with distance $x$ from a fixed origin as $u=\frac{A \sqrt{x}}{x+B}$, where $A$ and $B$ are constants. The dimensions of $A$ and $B$ are respectively
    View Solution
  • 3
    The dimensions of pressure are
    View Solution
  • 4
    A gas bubble from an explosion under water oscillates with a period proportional of $P^a\,d^b\,E^c$ where $P$ is the static pressure, $d$ is the density of water and $E$ is the energy of explosion. Then $a,\,b$ and $c$ are
    View Solution
  • 5
    Dimensions of kinetic energy are
    View Solution
  • 6
    Select the pair whose dimensions are same
    View Solution
  • 7
    In Ohm's experiment, the value of an unknown resistance were found to be $4.12\; \Omega, 4.08 \;\Omega, 4.22 \;\Omega$ and $4.14 \;\Omega$. Calculate absolute error and relative error in these measurement.
    View Solution
  • 8
    If force $F$ , velocity $V$ and time $T$ are taken as fundamental units then dimension of force in the pressure is
    View Solution
  • 9
    The dimension of mutual inductance is ............
    View Solution
  • 10
    The unit of Stefan-Boltzmann s constant $(\sigma )$ is
    View Solution