The table above shows the components of electromagnetic spectrum in order of increaasing frequency.Which of the following sets correctly identifies P, Q, R respectively?
Concept:The electromagnetic spectrum is arranged in order of increasing frequency from radio waves to gamma rays.Explanation:The known sequence of increasing frequency is:Radio wave, Microwave, Infrared, Visible, Ultraviolet, X-ray, Gamma ray.From the table, P, Q, and R come after infrared and before gamma rays.Therefore, P is Visible, Q is Ultraviolet, and R is X-ray.Answer:A. Visible, ultraviolet, X-ray