Formulae Physics for Competitive Exams

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Physics Formula
Physics formula

No.

Mechanics

1.

Linear motion with constant acceleration

2.

Relative motion

3.

Momentum of a particle

4.

Newton’s experimental law (NEL)

5.

Conservation of momentum

6.

Impulse (change in momentum)

7.

Angle in radians

8.

Angular velocity

9.

Linear velocity and angular velocity

10.

Centripetal acceleration

11.

Centripetal force

12.

Newton’s law of gravitation

13.

Force and acceleration

14.

Weight and acceleration due to gravity

15.

Period of a satellite

16.

Moment of a force

17

Torque of a couple

Centres of gravity

1.

Hemisphere, radius

2.

Hemispherical shell, radius

3.

Right circular cone

4.

Triangular lamina

5.

Arc, radius , angle

6.

Sector of disc, radius , angle

Moment of Inertia

1.

Uniform rod, length

2.

Uniform disc, radius

3.

Uniform hoop, radius

4.

Uniform solid sphere, radius

5.

Parallel axis theorem

6.

Perpendicular axis theorem

7.

Hooke’s law

8.

Simple harmonic motion

9.

Simple pendulum

10.

Compound pendulum

11.

Work

12.

Potential (gravitational) energy

13.

Kinetic energy

14.

Principle of conservation of mechanical energy

15.

Mass-energy equivalence

16.

Power

17.

Percentage efficiency

18.

Young’s modulus

19.

Stress

20.

Strain

21.

Density

22.

Pressure

23.

Pressure in a fluid

24.

Thrust on an immersed plane surface

25.

Boyle’s law

Heat and temperature

1.

Celsius temperature

2.

Energy needed to change temperature

3.

Energy needed to change state

Waves

1.

Velocity of a wave

2.

Doppler effect

3.

Fundamental frequency of a stretched string

4.

Mirror and lens formula

5.

Magnification

6.

Power of a lens

7.

Two lenses in contact

8.

Refractive index

9.

Diffraction grating

Electricity

1.

Coulomb’s law

2.

Electric field strength

3.

Potential difference

4.

Ohm’s law

5.

Resistivity

6.

Resistors in series

7.

Resistors in parallel

8.

Wheatstone bridge

9.

Joule’s law

10.

Force on a current-carrying conductor

11.

Force on a charged particle

12.

Induced emf

13.

Alternating voltage and current

14.

Capacitance

15.

Parallel-plate capacitor

16.

Energy stored in capacitor

17.

Power

18.

Magnetic flux

19.

Transformer

Modern physics

1.

Energy of a photon

2.

Einstein’s photoelectric equation

3.

Law of radioactive decay

4.

Half-life

5.

Mass-energy equivalence