17 JEE Main 2021 Units and Dimensions previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2021 previous-year questions from the Units and Dimensions chapter of Physics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Units and Dimensions chapter hub.
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 co…
If E ,   L ,   M and G denote the quantities as energy, angular momentum, mass and constant of gravitation re…
Which of the following is not a dimensionless quantity?
Match List - I with List - II : List - I List - II a h (Planck's constant) i MLT - 1 b E (kinetic energy) ii ML 2  …
If C and V represent capacity and voltage respectively then what are the dimensions of λ where C / V = λ ?
Match List I with List II. List-I List-II a Capacitance, C i M 1   L 1   T - 3   A - 1 b Permittivity of…
In a typical combustion engine the workdone by a gas molecule is given by W = α 2 β e - β x 2 k   T…
Which of the following equations is dimensionally incorrect? Where t = time, h = height, s = surface tension, θ =…
If time t , velocity v , and angular momentum l are taken as the fundamental units. Then the dimension of mass ( m ) in…
Match List - I with List - II. List - I List - II a Torque i MLT - 1 b Impulse ii MT - 2 c Tension iii ML 2   T -…
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