Physics Formula Sheet – Quick Revision for CBSE, NEET & JEE

 

🔹 Physical Constants

Constant	Symbol	Value
Speed of light	c	$3 \times 10^8 \, m/s$
Planck’s constant	h	$6.63 \times 10^{-34} \, J·s$
$hc$	—	$1242 \, eV·nm$
Gravitational constant	G	$6.67 \times 10^{-11} \, m^3 kg^{-1} s^{-2}$
Boltzmann constant	k	$1.38 \times 10^{-23} \, J/K$
Molar gas constant	R	$8.314 \, J·mol^{-1} K^{-1}$
Avogadro’s number	$N_A$	$6.023 \times 10^{23} \, mol^{-1}$
Charge of electron	e	$1.602 \times 10^{-19} \, C$
Permeability of vacuum	$\mu_0$	$4\pi \times 10^{-7} \, N/A^2$
Permittivity of vacuum	$\epsilon_0$	$8.85 \times 10^{-12} \, F/m$
Coulomb’s constant	—	$9 \times 10^9 \, N·m^2/C^2$
Faraday constant	F	$96485 \, C/mol$
Electron mass	$m_e$	$9.1 \times 10^{-31} \, kg$
Proton mass	$m_p$	$1.6726 \times 10^{-27} \, kg$
Neutron mass	$m_n$	$1.6749 \times 10^{-27} \, kg$
Atomic mass unit	u	$1.66 \times 10^{-27} \, kg = 931.49 \, MeV/c^2$
Stefan–Boltzmann constant	$\sigma$	$5.67 \times 10^{-8} \, W/m^2K^4$
Rydberg constant	R	$1.097 \times 10^7 \, m^{-1}$
Bohr magneton	$\mu_B$	$9.27 \times 10^{-24} \, J/T$
Bohr radius	$a_0$	$0.529 \times 10^{-10} \, m$
Standard atmosphere	atm	$1.01325 \times 10^5 \, Pa$
Wien’s constant	b	$2.9 \times 10^{-3} \, mK$

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