The near point of a normal human eye is MCQ with Answer and Explanation

Explanation:
In vacuum, all objects fall at same rate. A is false. R is true. So C correct.

Explanation:
Impulse = F Δt = Δp (change in momentum). Derived from Newton's second law. Force is rate of change of momentum. Impulse-momentum theorem important for collisions.

Explanation:
Lens maker's formula: 1/f = (μ_lens/μ_medium - 1)(...). In water, relative refractive index reduces, so power decreases, focal length increases. Glass in water behaves less converging.