JEE MAINS · Physics
Units and Dimensions
200 practice questions for JEE Mains — 125 easy · 63 medium · 12 hard. Every question is graded instantly with a step-by-step solution when you miss it.
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MCQ
Match List I with List II List-I List-II A Spring constant I $[T^{-1}]$ B Angular speed II $[MT^{-2}]$ C Angular momentum III $[ML^{2}]$ D Moment of Inertia IV $[ML^{2}T^{-1}]$ Choose the correct answer from the options…
Numerical
In a measurement, it is asked to find modulus of elasticity per unit torque applied on the system. The measured quantity has dimension of $\left[M^a L^b T^c\right]$. If $b=-3$, the value of $c$ is ________
MCQ
Match List I with List II List I List II A Angular momentum I $\left[\mathrm{ML}^{2}T^{-2}\right]$ B Torque II $\left[\mathrm{ML}^{-2}T^{-2}\right]$ C Stress III $\left[\mathrm{ML}^{2}T^{-1}\right]$ D Pressure gradient…
MCQ
Match List I with List II List - I List - II A Surface tension I. $\mathrm{kg}m^{-1}s^{-1}$ B Pressure II. $\mathrm{kg}ms^{-1}$ C Viscosity III. $\mathrm{kg}m^{-1}s^{-2}$ D Impulse IV. $\mathrm{kg}s^{-2}$ Choose the…
MCQ
Match List-I with List-II. List-IList-IIA. Meter (L)I. $\sqrt{\dfrac{hc}{G}}$B. Second (S)II. $\sqrt{\dfrac{Gh}{c^5}}$C. Kilogram (M)III. $\sqrt{\dfrac{K^2L^2c^3}{Gh}}$D. Kelvin (K)IV. $\sqrt{\dfrac{Gh}{c^3}}$ where $h$…
MCQ
Match List I with List II List I List II A. Torque I. $ML^{-2}T^{-2}$ B. Stress II. $ML^{2}T^{-2}$ C. Pressure gradient III. $ML^{-1}T^{-1}$ D. Coefficient of viscosity IV. $ML^{-1}T^{-2}$ Choose the correct answer from…
MCQ
Match List I with List II. List I List II (A) Torque (I) $\mathrm{Nms}^{-1}$ (B) Stress (II) $\mathrm{Jkg}^{-1}$ (C) Latent Heat (III) $\mathrm{Nm}$ (D) Power (IV) $\mathrm{Nm}^{-2}$ Choose the correct answer from the…
MCQ
Match List I with List II List List II A Young's Modulus $(Y)$ I $[\mathrm{ML}^{-1}T^{-1}]$ B Co-efficient of Viscosity $(\eta\,)$ II $[\mathrm{ML}^{2}T^{-1}]$ C Planck's Constant $(h)$ III $[\mathrm{ML}^{-1}T^{-2}]$ D…
MCQ
Match List I with List II List I List II $A.$ Planck's constant $\left(h\right)$ $I.$ $\left[M^{1}L^{2}T^{-2}\right]$ $B.$ Stopping potential $\left(V_{s}\right)$ $\mathrm{II}.$ $\left[M^{1}L^{1}T^{-1}\right]$ $C.$ Work…
MCQ
Match List I with List II List I List II A Torque I $\mathrm{kg}m^{-1}s^{-2}$ B Energy density II $\mathrm{kg}ms^{-1}$ C Pressure gradient III $\mathrm{kg}m^{-2}s^{-2}$ D Impulse IV $\mathrm{kg}m^{2}s^{-2}$ Choose the…
MCQ
Match List I with List II : List-I (Physical Quantity) List-II (Dimensional Formula) A Pressure gradient I $\left[M^{0}L^{2}T^{-2}\right]$ B Energy density II $\left[M^{1}L^{-1}T^{-2}\right]$ C Electric Field III…
Numerical
A ball of radius $r$ and density $\rho$ dropped through a viscous liquid of density $\sigma$ and viscosity $\eta$ attains its terminal velocity at time $t$, given by $t=A \rho^{a} r^{b} \eta^{\mathrm{c}} \sigma^{d}$,…