The process of transfer of heat in fluids by actual movement of particles is called MCQ with Answer and Explanation

Explanation:
Charge of electron e = 1.6 × 10⁻¹⁹ C. Number n = 1/e = 1/(1.6×10⁻¹⁹) = 6.25 × 10¹⁸. This is a huge number. Important for current (1 A = 1 C/s).

Explanation:
T ∝ √L, L'=4L => T' = √4 T = 2×2 = 4 s.

Explanation:
Vertical motion is independent of horizontal. t = √(2h/g). Mass doesn't affect. Horizontal velocity affects range, not time of fall. Projectile motion independence of perpendicular components.