In electromagnetic spectrum, $V_1, V_2$ and $V_3$ respectively denote the frequencies of microwaves, ultraviolet waves and gamma-rays. We can conclude that:

$V_1<V_2<V_3$

The correct answer is Option (2) → $V_1<V_2<V_3$

Given that $V_1,V_2$ and $V_3$ represent the frequencies of microwaves UV waves and gamma rays respectively.

$V_1<V_2<V_3$

as, 

$λ_2>λ_1>λ_3$  [λ = wavelength]