Q

Match electromagnetic waves with uses. P: Radio waves; Q: Microwaves; R: Infrared rays; S: Gamma rays. (i) Household electronic remote controls; (ii) Aircraft radar/navigation; (iii) Cellular phones; (iv) Destroying cancer cells in medicine. Options list matches for P, Q, R, S.

RRB NTPC (Stage-I) 29/04/2016 (Shift-III) 2016
✓ Answer: C (iii), (ii), (i), (iv)
The intended matches are radio waves with cellular communication, microwaves with radar, infrared with remote controls and gamma rays with cancer treatment.