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JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)

jee_main_2025_24_jan_morning - Units and Measurements Topics

Master these core formulas and structures to solve almost any past paper question.

Sample Questions in this Chapter

QUESTION #4 Significant Figures
For an experimental expression y=frac32.3times112527.4 , where all the digits are significant. Then to report the value of y we should write :-
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QUESTION #22 Screw Gauge and Least Count
The least count of a screw guage is 0.01 mathrm~mm . If the pitch is increased by 75 \% and number of divisions on the circular scale is reduced by 50 \% , the new least count will be \_ times 10^-3 mathrm~mm .
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YOUR FIRST PREP STEP STARTS HERE

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Say goodbye to generic mock test fatigue. RankBit uses smart analysis to group past exam questions into their foundational Repeating Question Types. Find chapter weightage, track repeating questions, and score higher with targeted practice.

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PATH A — FULL LENGTH PRACTICE

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Topic-wise Practice Hub

Practice past-year questions one chapter at a time. Pick an exam → subject → chapter and get every PYQ for that topic — pulled together from all past papers — with the chapter's key formulas alongside.

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