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Physics · JEE

Least count, significant figures, Errors in measurements Revision for JEE

12+ syllabus-aligned questions available

Quick answer

Revise Least count, significant figures, Errors in measurements by covering every subtopic once, drilling formulas, then solving 12+ timed MCQs with full solutions.

Use this Least count, significant figures, Errors in measurements revision checklist before mocks and the final exam. Reinforce concepts with 12+ syllabus-aligned MCQs on Goodmarks.

Revision checklist

  1. 1.Core idea: Least count, significant figures, Errors in measurements
  2. 2.Relates to other subtopics in Units and Measurements
  3. 3.SI base and derived units, least count, significant figures
  4. 4.Errors: absolute, relative, percentage; propagation rules
  5. 5.Master Least count, significant figures, Errors in measurements definitions and standard results
  6. 6.Solve 20 timed MCQs for Least count, significant figures, Errors in measurements

Syllabus context

Part of Units and Measurements in JEE Main Physics.

Free sample questions

Attempt 8 free MCQs for Least count, significant figures, Errors in measurements. Unlock 4+ more with Pro.

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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
The mass of a ball is 1.76kg.1.76 k g . The mass of 25 such balls is
Q3PhysicsUnit 1: Units and Measurements
A cube has a side of length 2.342m2.342 m. The surface area and volume in correct significant figures are respectively:
Q4PhysicsUnit 1: Units and Measurements
The radius of a sphere is measured to be (4.0+2.0)cm(4.0+2.0) \mathrm{cm} the maximum percentage error in the measurement of the volume of the sphere is
Q5PhysicsUnit 1: Units and Measurements
Two students PP and QQ perform an experiment to verify Ohm's law for a conductor with resistance R. They use a current source and a voltmeter with least counts of 0.1mA0.1 \mathrm{mA} and 0.1mV0.1 \mathrm{mV} respectively. The plots of the variation of voltage drop(V) across R with current(i) for both are shown. the statement which is most likely to be correct is?
Q6PhysicsUnit 1: Units and Measurements
The accuracy in the measurement of the diameter of hydrogen atom measured as 1.06×10−10m1.06 \times 10^{-10} \mathrm{m} is :
Q7PhysicsUnit 1: Units and Measurements
Three measurement are made as 18.425cm7.21cm18.425 \mathrm{cm} 7.21 \mathrm{cm} and 5.0cm.5.0 \mathrm{cm} . The addition should be written as then:
Q8PhysicsUnit 1: Units and Measurements
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Frequently asked questions

How should I revise Least count, significant figures, Errors in measurements before JEE?

Follow the checklist on this page, revise formulas daily, and attempt mixed MCQs every 2–3 days.

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