jee_main_2026_21_jan_morning - Units and Measurements Topics

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

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QUESTION #30 Errors in Measurement
In an experiment the values of two spring constants were measured as k₁=(10±0.2) N/m and k₂=(20±0.3) N/m. If these springs are connected in parallel, then the percentage error in equivalent spring constant is :
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QUESTION #32 Dimensional Analysis
Consider a modified Bernoulli equation. (P+ ABt²)+ (h+Bt)+(1)/(2) ²=constant If t has the dimension of time then the dimensions of A and B are ____, ____ respectively.
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Rankbit System
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%)

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