Question

________ waves have short wave-length.

(a) Microwave

(b) Radio wave

(c) Gamma rays

(d) IR waves

I got this question in an international level competition.

This intriguing question comes from Respiratory Gas Analysers topic in section Pulmonary Function Analysers of Biomedical Instrumentation

Answer 1

Right option is (c) Gamma rays

The explanation: Electromagnetic spectrum ranges from very short wavelengths (including gamma and X-rays) to very long wavelengths (including microwaves and broadcast radio waves). The range of wavelength of gamma rays and X-rays is 10-4 to 10 nm. The range of wavelengths of microwaves and radio-waves is 106 to 109 nm.