The ground state energy of a quantum harmonic oscillator is: A. Zero B. (\frac{1}{2}h\nu) C. (h\nu) D. Infinite Explanation: Zero-point energy is half quantum energy.
Which phenomenon confirms wave nature of electrons? A. Photoelectric effect B. Electron diffraction C. Compton effect D. Pair production Explanation: Electron diffraction demonstrates wave behavior.
The Hamiltonian of a system represents: A. Total potential energy B. Total kinetic energy C. Total energy of the system D. Only internal energy Explanation: Hamiltonian corresponds to total energy in many systems.
In a relativistic framework, mass-energy equivalence is expressed as: A. (E = mc) B. (E = mc^2) C. (E = \frac{1}{2}mv^2) D. (E = hv) Explanation: Einstein showed mass can be converted into energy via (E=mc^2).
Which energy source is non-renewable? A. Wind B. Solar C. Coal D. Hydro Explanation: Coal is finite resource.
Which process shapes land? A. Erosion B. Fusion C. Respiration D. Photosynthesis Explanation: Erosion wears away landforms.
Which rock is volcanic? A. Granite B. Basalt C. Marble D. Limestone Explanation: Basalt forms from lava.
Which gas is produced in respiration? A. O₂ B. CO₂ C. N₂ D. H₂ Explanation: Respiration releases CO₂.
Which plant pigment absorbs light? A. Chlorophyll B. Hemoglobin C. Keratin D. Melanin Explanation: Chlorophyll captures light energy.
Which system controls body? A. Digestive B. Nervous C. Respiratory D. Circulatory Explanation: Nervous system regulates functions.