Match the List-I with List-II: List I List II A Microwaves I...

(A) A Klystron valve or the magnetron valve are generally used for the production of electromagnetic waves and that electromagnetic wave is Microwave. So, $\left(A\right) \to IV$.

(B) Gamma rays are produced during the disintegration of radioactive atomic nuclei and the decay of certain subatomic particles.So, $\left(B\right) \to I$

(C) Radio waves can be produced by rapid acceleration and deceleration of electrons in aerials (conductors). These can be detected by receivers of aerials. So, $\left(C\right) \to II$

(D) X-rays are produced when a metal target or any other element is bombarded with high energy particles such as electrons, photons or ions. When high energy electrons is incident on a bound electron in an atom, then bound electron emits from the inner shell of that atom. So, $\left(D\right) \to III$