Correct Answer - Option 2 : Speed of both are same.
CONCEPT:
Electromagnetic spectrum: It is a collection of a range of different waves in sequential order from radio to gamma electromagnetic waves.
Frequency (ν) = speed of light (c)/wavelength (λ)
- The speed of all EM waves is the same.
-
Visible Light: A portion in the spectrum of electromagnetic waves that is visible to the human eye, ranging roughly between 390 to 750 nm.
-
X–rays are electromagnetic waves not mechanical wave because they are diffracted by the crystal.
Radiation
|
Range of wavelengths
|
Typical wavelength
|
↓
|
Increasing wavelength
Decreasing
Energy
Decreasing
frequency
|
Gamma
|
10-16 m – 10-10 m
|
10-15 m
|
X-Rays
|
10-13 m – 10-8 m
|
10-10 m
|
UV
|
10-8 m – 400 nm
|
10-8 m
|
Visible Light
|
400 nm – 700 nm
|
|
Infra-red
|
700 nm – 10-3 m
|
10-5 m
|
Microwaves
|
10-3 m – 10-1 m
|
10-2 m
|
Radio waves
|
10-1 m – 106 m
|
102 m
|