Units and Measurements

JEE Main · Physics · 16 past questions

These are the board's own papers. 185 more board questions reprinted in the books we use in class are for signed-in students: sign in.

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1. Q1 2026 2 Apr Shift 1

   The dimensional formula of $\frac12\epsilon_o E^2$ ($\epsilon_o$ = permittivity of vacuum and E = electric…

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2. 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…

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3. 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…

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4. 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…

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5. 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…

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