JEE MAINS QFT1 2025 - Physics

It states that for a given electric field, the charge enclosed within a closed surface is proportional to the flux of the electric field through that surface. This flux is the integral of the electric field over the surface.

A scalar quantity that measures the amount of energy transferred to a system due to a change in temperature.

The ratio of the change in momentum of an object to the time it takes for that change to occur. It's a measure of how fast an object's momentum changes.

A device that measures the dimensions of an object, often using a main scale and a Vernier scale for more accurate measurements.

The property of a material that resists the flow of fluids through it. It's often related to the viscosity and density of the fluid.

A logical gate that outputs a HIGH signal only if all its inputs are LOW signals. It's the opposite of an OR gate.

A system of two stars orbiting around a common center of mass. The stars' orbital periods, masses, and radii are related by Kepler's Laws.

The relationship between the wavelength of a particle and its momentum. It's a fundamental principle in quantum mechanics, showing that particles exhibit wave-like properties.

A process in which a system's internal energy remains constant, meaning any heat added is directly converted to work, and vice-versa.

The opposition to an electric current’s flow in a circuit. It's measured in Ohms (Ω).

A mathematical measure of the uncertainty in a measurement. It's often expressed as a percentage of the measured value.

A measure of how much energy is converted into useful work in a process. It's expressed as a percentage, showing how efficient the process is.

The bending of light as it passes from one medium to another, caused by the change in the speed of light.

The phenomenon where light does not pass through a medium, but is instead reflected back from the surface. This occurs when the angle of incidence exceeds a critical angle.

The power of light per unit area. It's measured in units of Watts per square meter (W/m²).

A material that is weakly attracted to a magnet. It becomes magnetized in the presence of a magnetic field but loses its magnetization when the field is removed.

A material that is weakly repelled by a magnet. It is not attracted to a magnet and can be slightly repelled by a strong magnetic field.

A material that is strongly attracted to a magnet and can become permanently magnetized. It exhibits strong magnetic properties.

The specific enthalpy change that occurs when one mole of a substance undergoes a chemical reaction in a standard state, typically at a pressure of 1 atm and a temperature of 298K.

A reaction in which one element undergoes both oxidation and reduction. It involves the same element in both its oxidized and reduced forms.

The process where a substance gains electrons. It's the opposite of oxidation.

A type of chemical reaction that involves the breaking of a carbon-halogen bond, often in the presence of a nucleophile. It's a common reaction in organic chemistry.

A model used to predict the shapes of molecules based on the repulsion between electron pairs around a central atom.

A type of isomerism where two compounds have the same molecular formula but differ in their arrangement of atoms around a chiral center.

The point where the three medians of a triangle intersect. It's the center of mass of the triangle.

A sequence where the ratio between consecutive terms is constant. It's often described as a growth or decay pattern.

A sequence where the difference between consecutive terms is constant. It's also known as an arithmetic sequence.

A function that maps each element of a set to a unique element of another set. It's a specific type of relation between sets.

A diagonal matrix where all the diagonal elements are non-zero and all other elements are zero. It's a special type of square matrix.

A mathematical expression that represents the sum of an infinite number of terms. It can be a geometric series, an arithmetic series, or other types.

A type of function where the derivative of the function is proportional to the function itself. It's often used to model exponential growth or decay.

A type of function that describes a straight line on a graph. It has the general form y = mx + c where 'm' is the slope and 'c' is the y-intercept.

A mathematical function that describes a relationship between two variables where one variable is directly proportional to the other.

A function that is continuous over a given interval and has a derivative at every point in that interval.

A function that is a product of two functions. Its derivative can be found using the product rule of differentiation: (uv)' = u'v + uv'.

A function that is a ratio of two functions. Its derivative can be found using the quotient rule of differentiation: (u/v)' = (u'v - uv')/v².