Two resistors in series have equivalent 6 Ω, in parallel 4/3 Ω. Individual resistors are MCQ with Answer and Explanation

Explanation:
The power (P) of a lens indicates its converging or diverging ability. It is mathematically defined as the reciprocal of the focal length (f), provided the focal length is measured in meters. The formula is P = 1 / f(in meters). The SI unit of power for a lens is the Diopter (D). A focal length of 0.5m gives a power of 2D.

Explanation:
EM waves transverse: E ⊥ B ⊥ propagation direction. Derived from Maxwell's equations. Memory tip: 'EM wave: right-hand rule for E×B direction'. Wave property frequently tested in competitive modern physics sections.

Explanation:
In vacuum, no air resistance, all bodies fall with same g. Galileo's law. Mass independent.