Q.
If λv, λx and λm represent the wavelengths of visible light, X-rays and microwaves respectively, then :
A) λm > λx > λv
B) λv > λm > λx
C) λm > λv > λx
D) λv > λx > λm
Explanation
[Solution from source] In the EM spectrum microwaves (mm–cm) are longer than visible light (400–700 nm), which is longer than X-rays (≈ 0.01–10 nm). So λm > λv > λx. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.