9 JEE Main 2020 Units and Dimensions previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2020 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.
Given, B is magnetic field induction, and μ 0 is the magnetic permeability of vacuum. The dimension of B 2 2 μ…
The quantities x = 1 μ 0 ∈ 0 , y = E B and z = l C R are defined where C-capacitance, R-Resistance, ℓ…
If momentum ( P ) , area ( A ) and time ( T ) are taken to be the fundamental quantities then the dimensional formula f…
Amount of solar energy received on the earth's surface per unit area per unit time is defined a solar constant. Dimensi…
A quantity f is given by f = h c 5 G where c is speed of light, G univasal gravitational constant and h is the Planck&r…
Dimensional formula for thermal conductivity is (here K denotes the temperature):
If speed V , area A and force F are chosen as fundamental units, then the dimension of Young's modulus will be :
The dimension of stopping potential V 0 in photoelectric effect in units of Planck’s constant ‘ h ’,…
A quantity x is given by ( 1 F v 2 / W L 4   ) in terms of moment of inertia I , force F , velocity v , work W and…