Derivation of Physics for CBSE


Newton's Second Law of Motion:
- Newton's second law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Mathematically, it is expressed as F = ma, where F is the net force, m is the mass of the object, and a is the acceleration.
- To derive this equation, one can consider a free-body diagram of an object with forces acting on it, apply Newton's first law, and analyze the forces to come up with the equation F = ma.

Snell's Law:
- Snell's Law describes the relationship between the angles of incidence and refraction when light passes through different mediums. It is given by n1sinθ1 = n2sinθ2, where n1 and n2 are the refractive indices of the two mediums, and θ1 and θ2 are the angles of incidence and refraction, respectively.
- The derivation of Snell's Law involves applying the principles of wave optics, specifically the change in the speed of light when it passes from one medium to another, and using trigonometry to relate the angles of incidence and refraction.

Ohm's Law:
- Ohm's Law states that the current flowing through a conductor is directly proportional to the potential difference across it and inversely proportional to its resistance. Mathematically, it is represented as V = IR, where V is the potential difference, I is the current, and R is the resistance.
- The derivation of Ohm's Law can be done by considering the flow of electrons in a conductor, the interaction between the electric field and the charge carriers, and the relationship between current, voltage, and resistance in a circuit.

These derivations are fundamental in understanding the principles of physics and are essential for CBSE students to grasp the concepts effectively.