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Units and Measurement important formula, Cheat Sheet of Physics

Physics

Important formula for units and Measurement chapter. This formula help for exam

Typology: Cheat Sheet

2025/2026

Uploaded on 05/15/2026

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Class 11 Physics Study Guide
Quantity Basic Formula SI Unit Dimensional
Formula
Derivation
Concept
Speed / Velocity
(Chaal / Veg) Distance / Time m/s [M0 L1 T-1]L / T
Acceleration
(Tvaran) Velocity / Time m/s2[M0 L1 T-2](L T-1) / T
Force
(Bal) Mass × Acceleration Newton (N) [M1 L1 T-2]M × (L T-2)
Work
(Karya) Force × Displacement Joule (J) [M1 L2 T-2](M L T-2) × L
Energy
(Urja) Capacity to do work Joule ( J) [M1 L2 T-2]Same as Work
Pressure
(Daab) Force / Area Pascal (Pa) [M1 L-1 T-2](M L T-2) / L2
Power
(Shakti) Work / Time Watt (W) [M1 L2 T-3](M L2 T-2) / T
Density
(Ghanatva) Mass / Volume kg/m3[M1 L-3 T0]M / L3
Momentum
(Sanveg) Mass × Velocity kg m/s [M1 L1 T-1]M × (L T-1)
Torque
(Bal Ghoorn) Force × Distance N m [M1 L2 T-2](M L T-2) × L
Exam Booster Tips:
Same Dimension Pairs: Work, Energy, and Torque all share [M1 L2 T-2].
Units and Measurement: Important Derived Quantities
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Class 11 Physics Study Guide

Quantity Basic Formula SI Unit

Dimensional

Formula

Derivation

Concept

Speed / Velocity (Chaal / Veg) Distance / Time m/s [M^0 L^1 T-1] L / T Acceleration (Tvaran) Velocity / Time (^) m/s^2 [M^0 L^1 T-2] (^) (L T-1) / T Force (Bal) Mass × Acceleration Newton (N) (^) [M^1 L^1 T-2] (^) M × (L T-2) Work (Karya) Force × Displacement Joule (J) (^) [M^1 L^2 T-2] (^) (M L T-2) × L Energy (Urja) Capacity to do work Joule (J) [M^1 L^2 T-2] Same as Work Pressure (Daab) Force / Area Pascal (Pa) [M^1 L-1^ T-2] (^) (M L T-2) / L^2 Power (Shakti) Work / Time Watt (W) (^) [M^1 L^2 T-3] (^) (M L^2 T-2) / T Density (Ghanatva) Mass / Volume (^) kg/m^3 [M^1 L-3^ T^0 ] (^) M / L^3 Momentum (Sanveg) Mass × Velocity kg m/s [M^1 L^1 T-1] (^) M × (L T-1) Torque (Bal Ghoorn) Force × Distance N m [M^1 L^2 T-2] (^) (M L T-2) × L Exam Booster Tips: Same Dimension Pairs: Work, Energy, and Torque all share [M

L

T

].

Units and Measurement: Important Derived Quantities

Force is the Key: Memorize Force [M^1 L^1 T-2] first; most other dimensions are derived from it. Dimensional Homogeneity: Only quantities with the same dimensions can be added or subtracted.