Units PYQs: JEE Mains Physics

Showing 1–11 of 11 questions

1. 1. A new unit \((\alpha)\) of length is chosen such that it is equal to the speed of light in vacuum. What is the distance between Venus and Earth in terms of \(\alpha\) units if light takes \(6\) min. \(40\) s to cover this distance? 2026 Easy
2. 2. If \(\in\), \( E \) and \( t \) represent the free space permittivity, electric field and time respectively, then the unit of \( \frac{eE}{t} \) will be : 2026 Medium
3. 3.

   List - I	List - II
   (A) Heat capacity of body	\(\text{(I) } \mathrm{J} \mathrm{kg}^{-1}\)
   (B) Specific heat capacity of body	\(\text{(II) } \mathrm{JK}^{-1}\)
   (C) Latent heat	\(\text{(III) } \mathrm{J} \mathrm{kg}^{-1} \mathrm{~K}^{-1}\)
   (D) Thermal conductivity	\(\text{(IV) } \mathrm{Jm}^{-1} \mathrm{~K}^{-1} \mathrm{~s}^{-1}\)

   Choose the correct answer from the options given below: 2025 Hard
4. 4. Match List - I with List - II.
   

   List - I	List - II
   (A) Magnetic induction	(I) Ampere meter2
   (B) Magnetic intensity	(II) Weber
   (C) Magnetic flux	(III) Gauss
   (D) Magnetic moment	(IV) Ampere meter

   
   Choose the correct answer from the options given below : 2025 Medium
5. 5. The unit of \(\sqrt{\frac{2 \mathrm{I}}{\epsilon_0 c}}\) is :
   (I = intensity of an electromagnetic wave, \(\mathrm{c}:\) speed of light) 2025 Easy
6. 6. Electric field in a certain region is given by \(\overrightarrow{ E }=\left(\frac{ A }{ x ^2} \hat{ i }+\frac{ B }{ y ^3} \hat{ j }\right)\). The \(SI\) unit of \(A\) and \(B\) are 2023 Medium
7. 7. Match List \(I\) with List \(II\)

   LIST\(-I\)	LIST\(-II\)
   \((A)\) Surface tension	\((I)\) \(Kg m ^{-1} s ^{-1}\)
   \((B)\) Pressure	\((II)\) \(Kg ms^{-1 }\)
   \((C)\) Viscosity	\((III)\) \(Kg m ^{-1} s ^{-2}\)
   \((D)\) Impulse	\((IV)\) \(Kg s ^{-2}\)

   Choose the correct answer from the options given below : 2023 Medium
8. 8. Match List \(I\) with List \(II\).

   List \(I\)	List \(II\)
   \((A)\) Torque	\((I)\) \(Nms^{-1}\)
   \((B)\) Stress	\((II)\) \(J\,kg^{-1}\)
   \((C)\) Latent Heat	\((III)\) \(Nm\)
   \((D)\) Power	\((IV)\) \(Nm^{-2}\)

   Choose the correct answer from the options below. 2022 Medium
9. 9. If \({E}\) and \({H}\) represents the intensity of electric field and magnetising field respectively, then the unit of \(E/H\) will be : 2021 Hard
10. 10. Match List\(-I\) with List\(-II\).

    List\(-I\)	List\(-II\)
    \((a)\) \({R}_{{H}}\) (Rydberg constant)	\((i)\) \({kg} {m}^{-1} {s}^{-1}\)
    \((b)\) \(h\) (Planck's constant)	\((ii)\) \({kg} {m}^{2} {s}^{-1}\)
    \((c)\) \(\mu_{{B}}\) (Magnetic field energy density)	\((iii)\) \({m}^{-1}\)
    \((d)\) \(\eta\) (coefficient of viscocity)	\((iv)\) \({kg} {m}^{-1} {s}^{-2}\)

    Choose the most appropriate answer from the options given below: 2021 Hard
11. 11. The density of a material in \(SI\, units\) is \(128\, kg\, m^{-3}\). In certain units in which the unit of length is \(25\, cm\) and the unit of mass \(50\, g\), the numerical value of density of the material is 2019 Medium

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