Physics · JEE

Important Questions: Units and Measurements for JEE

59+ syllabus-aligned questions available

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The most important Units and Measurements questions for JEE cover conceptual traps, standard results, and numerical patterns from Units of measurements, System of units, SI Units, fundamental and derived units, Least count, significant figures, Errors in measurements, Dimensions of Physics quantities, dimensional analysis and its applications. Goodmarks provides 50+ high-yield MCQs with full solutions.

Focus on what matters most. These important Units and Measurements questions cover high-weightage concepts from Units of measurements, System of units, SI Units, fundamental and derived units, Least count, significant figures, Errors in measurements, Dimensions of Physics quantities, dimensional analysis and its applications — the topics JEE repeats every year.

JEE Formula Sheet

6+ important formulas for Units and Measurements

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Subtopics in Units and Measurements

View Units and Measurements formula sheet — 6+ JEE formulas

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Q1PhysicsUnit 1: Units and Measurements

The mass of a box measured by a grocer's balance is 2.3 kg. Two gold pieces of masses 20.15 g and 20.17 g are added to the box. The total mass of the box is:

Q2PhysicsUnit 1: Units and Measurements

This S.I. unit of force is

Q3PhysicsUnit 1: Units and Measurements

The mass of a ball is

1.76 k g .

The mass of 25 such balls is

Q4PhysicsUnit 1: Units and Measurements

A cube has a side of length

2.342 m

. The surface area and volume in correct significant figures are respectively:

Q5PhysicsUnit 1: Units and Measurements

The radius of a sphere is measured to be

(4.0+2.0) \mathrm{cm}

the maximum percentage error in the measurement of the volume of the sphere is

Q6PhysicsUnit 1: Units and Measurements

How many seconds are there in a week?

Q7PhysicsUnit 1: Units and Measurements

If the units of length and force are increased four times, then unit of energy will

Q8PhysicsUnit 1: Units and Measurements

The dimensions of energy per unit volumes are the same as those of :

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Frequently asked questions

What makes a Units and Measurements question "important" for JEE?

Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.

Which subtopics in Units and Measurements are high-weightage?

Key areas include Units of measurements, System of units, SI Units, fundamental and derived units, Least count, significant figures, Errors in measurements, Dimensions of Physics quantities, dimensional analysis and its applications. Prioritise these before moving to edge cases.

How many important questions should I revise?

Revise 30–50 important MCQs per unit in the last month before JEE. Focus on questions you got wrong at least once.

Can I practise only important questions on Goodmarks?

Pro users can filter by unit and subtopic to target high-yield areas. Free users can attempt sample questions on this page.