PPSC Lecturer Physics MCQS Past Papers in pdf. SS Physics solved important questions answers.

Write the fundamental equation of quantum mechanics?

Answer: The fundamental equation of quantum mechanics is the Schrödinger equation.

Write the equation for the conservation of energy?

Answer: The equation for the conservation of energy is E = mc^2, where E represents energy, m represents mass, and c represents the speed of light.

Write the principle of least action in classical mechanics?

Answer: The principle of least action states that the path taken by a system between two points in space and time is the one that minimizes the action integral.

Write the Heisenberg uncertainty principle?

Answer: The Heisenberg uncertainty principle states that the more precisely the position of a particle is known, the less precisely its momentum can be known, and vice versa.

Write the equation for calculating the gravitational force between two objects?

Answer: The equation for calculating the gravitational force between two objects is F = G * (m1 * m2) / r^2, where F is the force, G is the gravitational constant, m1 and m2 are the masses of the objects, and r is the distance between them.

Write the definition of electric potential?

Answer: Electric potential is the amount of work done to bring a unit positive charge from infinity to a point in an electric field.

Write the equation for calculating the electric field around a point charge?

Answer: The equation for calculating the electric field around a point charge is E = k * (q / r^2), where E is the electric field, k is the electrostatic constant, q is the charge, and r is the distance from the charge.

Write the definition of magnetic flux?

Answer: Magnetic flux is a measure of the total magnetic field passing through a given area.

Write the equation for calculating the force on a charged particle moving in a magnetic field?

Answer: The equation for calculating the force on a charged particle moving in a magnetic field is F = q * (v x B), where F is the force, q is the charge, v is the velocity of the particle, and B is the magnetic field.

Write the definition of wave-particle duality?

Answer: Wave-particle duality is the concept in quantum mechanics that particles can exhibit both wave-like and particle-like properties.

Write the definition of angular momentum?

Answer: Angular momentum is the rotational analog of linear momentum and is defined as the product of the moment of inertia and the angular velocity.

Write the equation for calculating the energy of a photon?

Answer: The equation for calculating the energy of a photon is E = hf, where E is the energy, h is Planck’s constant, and f is the frequency of the photon.

Write the definition of the Lorentz transformation?

Answer: The Lorentz transformation is a mathematical transformation that relates the coordinates and time measurements between two observers moving relative to each other at constant velocities.

Write the equation for calculating the resistance of a wire?

Answer: The equation for calculating the resistance of a wire is R = ρ * (L / A), where R is the resistance, ρ is the resistivity of the material, L is the length of the wire, and A is the cross-sectional area.

Write the definition of the Planck constant?

Answer: The Planck constant, denoted by h, is a fundamental constant in quantum mechanics that relates the energy of a photon to its frequency.

Write the equation for calculating the power in an electric circuit?

Answer: The equation for calculating the power in an electric circuit is P = VI, where P is the power, V is the voltage, and I is the current.

Write the definition of the wave function in quantum mechanics?

Answer: The wave function in quantum mechanics is a mathematical function that describes the probability distribution of a particle’s position and momentum.

Write the equation for calculating the momentum of a particle?

Answer: The equation for calculating the momentum of a particle is p = mv, where p is the momentum, m is the mass of the particle, and v is its velocity.

Write the definition of the first law of thermodynamics?

Answer: The first law of thermodynamics, also known as the law of conservation of energy, states that energy cannot be created or destroyed in an isolated system, but can only change from one form to another.