JEE Main Units and Measurements questions

16 Physics questions on Units and Measurements as asked in JEE Main, newest first. 6 come with a worked solution.

Match List I with List II: | List I (Physical Quantity) | List II (Dimensional Formula) | |---|---| | A. Pressure gradient | I. [M^0L^2T^-2] | | B. Energy density | II. [M^1L^-1T^-2] | | C. Electric Field | III.…
2023 · with solution
Match List I with List II | List I | List II | |---|---| | A. Surface tension | I. kg m^-1s^-1 | | B. Pressure | II. kg ms^-1 | | C. Viscosity | III. kg m^-1s^-2 | | D. Impulse | IV. kg s^-2 | Choose the correct answer…
2023
The frequency (v) of an oscillating liquid drop may depend upon radius (r) of the drop, density (ρ) of liquid and the surface tension (s) of the liquid as : v = r^a ρ^b s^c. The values of a, b and c respectively are
2023 · with solution
Match List I with List II | List I (Current configuration) | List II (Magnitude of Magnetic Field at point O) | |---|---| | A. [straight wire with circular loop of radius r at center, current I] | I. B_0 = (mu_0 I)/(4π…
2023
Match List I with List II | | LIST I | | LIST II | |---|---|---|---| | A. | Young's Modulus (Y) | I. | [M L^-1 T^-1] | | B. | Co-efficient of Viscosity (η) | II. | [M L^2 T^-1] | | C. | Planck's Constant (h) | III. | [M…
2023 · with solution
Match List I with List II | LIST I | LIST II | |---|---| | A. Planck's constant (h) | I. [M^1 L^2 T^-2] | | B. Stopping potential (Vs) | II. [M^1 L^1 T^-1] | | C. Work function (Ø) | III. [M^1 L^2 T^-1] | | D. Momentum…
2023 · with solution
The area of a square is 5.29 cm^2. The area of 7 such squares taking into account the significant figures is
2019 · with solution
In SI units, the dimensions of (ε_0)/(mu_0) is
2019
Let l, r, c, and v represent inductance, resistance, capacitance and voltage, respectively. The dimension of l/rcv in SI units will be
2019
If speed (V), acceleration (A) and force (F) are considered as fundamental units, the dimension of Young's modulus will be
2019
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 is 50 g, the numerical value of density of the material is
2019
In form of G (universal gravitational constant), h (Planck constant) and c (speed of light), the time period will be proportional to
2019
The density of a material in the shape of a cube is determined by measuring three sides of the cube and its mass. If the relative errors in measuring the mass and length are respectively 1.5% and 1%, the maximum error…
2018 · with solution
Let [ε_0] denote the dimensional formula of the permittivity of vacuum. If M = mass, L = length, T = Time and A = electric current, then
2013
Which of the following sets have different dimensions?
2005
A quantity X is given by ε_0 L (Δ V)/(Δ t) where ε_0 is the permittivity of free space, L is a length, Δ V is a potential difference and Δ t is a time interval. The dimensional formula for X is the same as that of
2001

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