Question

X-rays are

• A. moving electron
• B. moving positive ion
• C. moving negative ion
• D. electromagnetic waves

Hint:

Remember the electromagnetic spectrum in order of increasing energy/frequency: Radio, Microwave, Infrared, Visible, Ultraviolet, X-ray, Gamma Ray. All components of this spectrum are fundamentally electromagnetic waves, differing only in their wavelength and frequency.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
The question asks to classify X-rays from the given options. This requires knowledge of the nature of X-rays and the electromagnetic spectrum.
Step 2: Detailed Explanation:
X-rays are a form of high-energy radiation. They are not particles with mass and charge like electrons or ions.
- A moving electron is a stream of negatively charged fundamental particles (beta radiation).
- A moving positive or negative ion is a charged atom or molecule.
- Electromagnetic waves are disturbances in the electromagnetic field that propagate through space, carrying energy. They do not have mass or charge. The electromagnetic spectrum includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
X-rays are produced when high-energy charged particles (like electrons) rapidly decelerate, typically by hitting a metal target. The kinetic energy of the particles is converted into electromagnetic radiation. X-rays fall between ultraviolet light and gamma rays in the electromagnetic spectrum, characterized by their short wavelength and high frequency/energy.
Step 3: Final Answer:
X-rays are a form of electromagnetic radiation, i.e., electromagnetic waves. Option (D) is correct.