The first law of thermodynamics relates energy conservation to the internal energy, heat and work of a system. CBSE Class 11 Physics 2024-2025 exam pattern includes concept-based MCQs and Chapter 11, “Thermodynamics,” is a key focus area. Expect questions testing your ...
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Resultant refers to the combined effect of two or more vectors acting on an object. It is a single vector that represents the sum of all individual vectors. The direction and magnitude of the resultant depend on the direction and ...
Mass is a fundamental property of matter that measures the amount of substance in an object. It is a scalar quantity and remains constant regardless of location. Mass is typically measured in kilograms (kg) and determines an object’s resistance to ...
Temperature is a measure of the average kinetic energy of particles in a substance. It determines the direction of heat flow, with heat moving from higher to lower temperatures. Temperature is measured in Celsius, Kelvin, or Fahrenheit scales and plays ...
A thermometer is an instrument used to measure temperature. It operates on the principle that the physical properties of materials change with temperature. Common types include mercury thermometers, alcohol thermometers, and digital thermometers. They are used in various fields such ...