Pendulum period independent of: MCQ with Answer and Explanation

Explanation:
Conservative forces (gravity, spring): work path-independent ⇒ ∮F·dr = 0 over closed loop. Enables potential energy definition. Memory aid: 'Conservative: ∮F·dr = 0; enables energy conservation'. Mechanics foundation frequently tested in competitive exams.

Explanation:
During beta decay, a neutron in an unstable nucleus transforms into a proton and an electron. The proton remains in the nucleus, but the electron is ejected at high speed. These ejected, high-energy electrons are called beta rays (or beta particles). Gamma rays are electromagnetic waves, and alpha particles are helium nuclei.

Explanation:
T = 1/(2×10⁶) = 0.5×10⁻⁶ s = 0.5 μs.