Physics Formulas
Chapter Measurement
- V = l x b x h (To find volume)
- 4πr2 (To find Surface area)
- v = volume m3
- l = length m
- b = breadth m
- h = height m
- π = 3.14 (constant)
Chapter Kinematics Of Linear Motion
- vf = vi + at (Final velocity maloom karni ho)
- S = vit + 1/2 at2
- 2as = vf2 - vi2
- V = S/t (To find speed)
- Vav = (vf + vi) / 2 (To find average velocity)
- vf = vi + gt (Final velocity maloom karni ho)
- h = vit + 1/2 gt2 (h = height, g = 9.8 m / s2 )
- h = vf2 - vi2
- 2gh = vf2 - vi2
Chapter Motion And Force
- F = ma (To Find force)
- a = F/m (To Find acceleration)
- W = mg (To Find weight)
- S = vit + 1/2 at2
- vf = vi + at
- 2as = vf2 - vi2
F = N
m = kg
a = m/s2
W = N
g = 10 m/s2 or If value of g is not given than it is 9.8m/s2
- P = mv (To Find momentum)
- a = (vf - vi) / t (To Find acceleration)
Chapter Vector
Components of vectors- Fx = F cosθ (Horizontal)
- Fy = F sinθ (Vertical)
Chapter Equilibrium
- T = F x d (Torque maloom karna ho jab diatance mojood ho)
- T = F x r (Torque maloom karna ho jab radius mojood ho)
- T/d = F (Force maloom karna ho aur torque mojood ho)
- T = N . m
- F = N
- d = moment of arm = m
Chapter Circular motion
- Fc = mv2 / r (Centripetal force maloom karna ho)
- Tc = mv2 / r (Tension maloom karna ho)
- ac = v2 / r (Centripetal acceleration maloom karna ho)
- F = Gm1m2 / R2 (Jab force maloom karni ho aur 2 masses mojood ho)
- Fc = Centripetal force N
- m = mass kg
- v = Velocity m/s
- r = Radius m
- F = Force N
- G = constant (6.67 x 10-11 Nm2/kg2)
- ac = Centripetal acceleration m/s2
Chapter Work, Power And Energy
- W = F.S cos θ (Jab work maloom karna ho aur angle mojood ho)
- W = F.S (Jab work maloom karna ho aur angle mojood na ho)
- P = Fv (Jab Power maloom karni ho aur velocity mojood ho)
- K.E = 1/2 mv2 (Jab K.E maloom karna ho aur velocity mojood ho)
- K.E = 1/2 m(vf - vi)2 (Jab KE maloom karna ho aur velocity mojood ho)
- P = W/t (Jab Power maloom karni ho aur Time mojood ho)
- P.E = mgh (Jab P.E maloom karni ho aur height mojood ho)
- S = vit + 1/2 at2
- 2as = vf2 - vi2
- F= ma
Units:
- W = J
- F = N
- S = m
- P = watt
- t = sec
- K.E = J
- P.E = J
- m = kg
- g = m /s2
Chapter Heat
- K = °C + 273 (To find Kelvin)
- °C = 5/9 (°F - 32) (To find Celcius)
- °F = 9/5 °C + 32 (To find Farenheit)
- PV = nRT (jab 1 mole ka zikr ho tou yeh formula use kare gy aur Temperature ko Kelvin main change kare gy)
- ∆Q = mC∆T (Amount of heat maloom karni ho aur specific heat mojood ho)
- C = ∆Q / m.∆T (Specific heat maloom karni ho)
- ∆L = αL∆T (jab Thermal expansion aur Linear expansion ka zikr ho)
- P = Pressure N/m2
- V = Volume cm3
- n = No. of moles (no unit)
- R = Constant 8.31 J/mol °C
- T = temperature K
- C = Specific heat J/kg °C
- m = mass kg
- Q = Amount of heat J
- K = Constant
- L = Length m
- α = linear thermal expansion k-1
- A = area m2
Chapter Wave And Sound
Chapter reflection And Refraction Of Light
Chapter Electricity
- V= IR
- V/I = R
- V/R = I
- I = V/t
- I = q/t
- V = Voltage (volt)
- I = Current (Ampere)
- R = resistance (Ω)
Chapter Nuclear Energy
- E = mc2 (To find energy)
- c = constant= 3 x 108 m/s
- m = kg
- E = Energy = Joule
- P = F/A (To find pressure)
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