Q71 / 270 · NDA 2025 (Phase 2) · General Ability
Which one of the following radiations has longer wavelength?
- AX-rays
- BUltraviolet
- Correct answerCMicro Wave
- DInfra-red
Solution
The electromagnetic spectrum in the order of increasing wavelength is:
Gamma rays $<$ X-rays $<$ Ultraviolet $<$ Visible light $<$ Infrared $<$ Microwaves $<$ Radio waves.
Comparing the given options, microwaves have the longest wavelength.
Answer: Micro Wave
Gamma rays $<$ X-rays $<$ Ultraviolet $<$ Visible light $<$ Infrared $<$ Microwaves $<$ Radio waves.
Comparing the given options, microwaves have the longest wavelength.
Answer: Micro Wave
Hence, the correct answer is option: 'C'.