Physics Formula NEET
Physics Formula NEET - Formula Quest Mania
Introduction
Physics is a crucial subject for NEET aspirants. Mastering formulas is essential to solving problems efficiently. This guide covers the most important physics formulas categorized into different topics.
Mechanics Formulas
Kinematics
Kinematics deals with the motion of objects without considering the forces causing the motion. The three equations of motion for constant acceleration are:
\[ v = u + at \]
\[ s = ut + \frac{1}{2}at^2 \]
\[ v^2 = u^2 + 2as \]
Where:
- \( v \) = Final velocity
- \( u \) = Initial velocity
- \( a \) = Acceleration
- \( s \) = Displacement
- \( t \) = Time
These equations are essential for solving problems related to free fall, projectile motion, and uniformly accelerated motion.
Newton's Laws of Motion
Newton's Second Law defines force as:
\[ F = ma \]
Where \( F \) is force, \( m \) is mass, and \( a \) is acceleration.
This equation is critical for understanding concepts like momentum, impulse, and collisions.
Work, Power, and Energy
Work is defined as the force applied on an object causing displacement:
\[ W = Fd \cos \theta \]
Kinetic Energy:
\[ KE = \frac{1}{2} mv^2 \]
Potential Energy:
\[ PE = mgh \]
Understanding energy transformations is vital in mechanics and thermodynamics.
Thermodynamics Formulas
First Law of Thermodynamics
\[ \Delta U = Q - W \]
This law states that the change in internal energy of a system equals the heat added to the system minus the work done by the system.
Ideal Gas Equation
\[ PV = nRT \]
Where:
- \( P \) = Pressure
- \( V \) = Volume
- \( n \) = Number of moles
- \( R \) = Universal gas constant
- \( T \) = Temperature
This equation is useful in solving gas-related numerical problems in physics.
Electricity and Magnetism
Coulomb's Law
Force between two charges:
\[ F = k \frac{q_1 q_2}{r^2} \]
Ohm’s Law
\[ V = IR \]
This fundamental equation is used to analyze electric circuits.
Magnetic Force
\[ F = qvB \sin \theta \]
Optics Formulas
Lens Formula
\[ \frac{1}{f} = \frac{1}{v} - \frac{1}{u} \]
Mirror Formula
\[ \frac{1}{f} = \frac{1}{u} + \frac{1}{v} \]
Modern Physics
Photoelectric Equation
Einstein’s photoelectric equation:
\[ h\nu = \phi + KE \]
De Broglie Wavelength
\[ \lambda = \frac{h}{mv} \]
De Broglie’s equation relates the wavelength of a particle to its momentum.
Conclusion
Understanding and memorizing these formulas is essential for acing the NEET physics section. Regular practice and application in problem-solving will ensure mastery.
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