The uncertainty principle was proposed by MCQ with Answer and Explanation

Explanation:
Dispersion: separation due to different refractive indices for different colours. Refraction is bending. Scattering (Tyndall effect) makes sky blue. Total internal reflection in optical fibers.

Explanation:
Volume V = (4/3)πr³, so ΔV/V = 3 Δr/r. Percentage error in volume = 3 × 2% = 6%.

Explanation:
Kinetic energy (K) and momentum (p) are related by K = p^2 / 2m. If momentum increases by 50%, the new momentum p' = p + 0.5p = 1.5p. The new kinetic energy K' = (1.5p)^2 / 2m = 2.25 (p^2 / 2m) = 2.25 K. This means K has increased by 1.25 K, which is a 125% increase. Understanding quadratic relationships is crucial for such problems.