Question

The correct ascending order of the wavelengths of the following electromagnetic waves is: Ultraviolet, X-rays, Infrared, Gamma rays and Visible light.

• A. X-ray, Gamma ray, Ultraviolet, Infrared, Visible light
• B. Gamma ray, X-ray, Ultraviolet, Visible light, Infrared
• C. Gamma ray, X-ray, Infrared, Visible light, Ultraviolet
• D. Gamma ray, X-ray, Ultraviolet, Infrared, Visible light

Hint:

Remember the wavelength order of electromagnetic waves: \[ \text{Gamma} < \text{X-ray} < \text{UV} < \text{Visible} < \text{Infrared} < \text{Microwave} < \text{Radio}. \] As wavelength increases, frequency and photon energy decrease.

Answer 1

The Correct Option is B

Step 1: Recall EM spectrum ordering by wavelength.
Shortest to longest: Gamma<X-ray<UV<Visible<IR<Microwave<Radio.

Step 2: Select ascending order for given radiations.
Gamma ray<X-ray<Ultraviolet<Visible light<Infrared matches option (2).

Step 3: Final Answer:
Option (2).