Physics MDCAT MCQs
Mechanics, electricity & modern physics MCQs
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Answer: Adiabatic: no heat exchange with surroundings.
Answer: Inductance is measured in Henry (H).
Answer: Half-life is when half the radioactive nuclei decay.
Answer: Absolute zero is 0 K = -273.15 C.
Answer: Generator converts mechanical to electrical energy.
Answer: Pakistan uses 50 Hz AC supply.
Answer: Isothermal means constant temperature.
Answer: Mass can be converted to energy and vice versa.
Answer: Fission splits heavy nuclei into lighter fragments.
Answer: First law: delta U = Q - W, conservation of energy.
Answer: Specific heat capacity of water is ~4200 J/kgK.
Answer: Fusion needs ~10^7 K to overcome electrostatic repulsion.
Answer: N = N0 e^(-lambda t), an exponential decay.
Answer: Alpha particles are helium nuclei with charge +2e.
Answer: Eddy currents are induced in bulk conductors.
Answer: Mass number A = Z + N.
Answer: Gamma rays are high-energy photons from nuclear transitions.
Answer: Parallel currents attract; anti-parallel currents repel.
Answer: Carnot efficiency = 1 - T_sink/T_source.
Answer: Average KE = 3/2 kT, proportional to absolute temperature.