Units and Measurements

JEE Main · Physics · 16 past questions

These are the board's own papers. 184 more board questions reprinted in the books we use in class are for signed-in students: sign in.

Q1 2026 2 Apr Shift 1

The dimensional formula of $\frac12\epsilon_o E^2$ ($\epsilon_o$ = permittivity of vacuum and E = electric…
Q2 2026 2 Apr Shift 1

The diameter of a wire measured by a screw gauge of least count 0.001 cm is 0.08 cm. The length measured by a…
Q3 2026 2 Apr Shift 2

Dimensions of universal gravitational constant (G) in terms of Planck's constant ($h$), distance (L), mass…
Q4 2026 2 Apr Shift 2

In a screw gauge the zero of main scale reference line coincides with the fifth division of the circular…
Q5 2026 4 Apr Shift 1

In a screw gauge when the circular scale is given five complete rotations it moves linearly by 2.5 mm. If the…
Q6 2026 4 Apr Shift 2

Match the LIST-I with LIST-II. Choose the correct answer from the options given below…
Q7 2026 5 Apr Shift 1

In a Vernier calipers, when both jaws touch each other, zero of the Vernier scale is shifted to the right of…
Q8 2026 5 Apr Shift 1

$L$, $C$ and $R$ represents physical quantities inductance, capacitance and resistance respectively. The…
Q9 2026 5 Apr Shift 2

Match List - I with List - II, where $h$ (Planck's constant), $G$ (gravitational constant) and $c$ (speed of…
Q10 2026 5 Apr Shift 2

In an experiment to determine the resistance of a given wire using Ohm's law, the voltmeter and ammeter…
Q11 2026 6 Apr Shift 1

The density $\rho$ of a uniform cylinder is determined by measuring its mass $m$, length $l$ and diameter…
Q12 2026 6 Apr Shift 1

The potential energy of a particle changes with distance $x$ from a fixed origin as…
Q13 2026 6 Apr Shift 2

The percentage error in the calculated volume of a sphere, if there is 2% error in its diameter measurement…
Q14 2026 6 Apr Shift 2

Match List-I with List-II. Choose the correct answer from the options given below…
Q15 2026 8 Apr Shift 2

A new unit ($\alpha$) of length is chosen such that it is equal to the speed of light in vacuum. What is the…
Q16 2026 8 Apr Shift 2

Consider the equation $H = \dfrac{x^p \epsilon^q E^r}{t^s}$…