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Physics · Class 11
Upthrust is the net upward force exerted by a fluid on an immersed body. Archimedes' principle states that this force equals the weight of the displaced fluid: Fb = ρf gV_d.
PracticeBoyle’s law states that for a fixed amount of gas at constant temperature, volume is inversely proportional to pressure, so the product PV remains constant.
PracticeA reversible process can be retraced through the same states while restoring both system and surroundings; an irreversible process cannot be exactly undone without leaving a net change in the surroundings.
PracticeAccuracy describes how closely a measured value agrees with the true or accepted reference value.
PracticePhysics is the branch of natural science that studies matter, energy, motion, forces, space, time and their interactions.