Which of the arrangements of radiations below shows decreasing order of wavelengths?
A
X-rays> radio waves > infrared radiations
B
Radio waves> infrared radiations > X-rays
C
Infrared radiations > radio waves > X-rays
D
X-rays> infrared radiations > radio waves
Verified Correct Answer: B.
Physical Principles & Numerical Solution
radio waves have a longer wavelength than infrared light, and infrared than x-rays in the electromagnetic spectrum.
Source: Myschool Past Questions Archive (Record #61969)