Question

What is the wavelength range of X-rays

• A. ( \text{700 nm to 1 nm} ) \
• B. ( \text{1 mm to 700 nm} ) \
• C. ( \text{0.1 to 1 mm} ) \
• D. ( \text{0.01 to 10 nm} ) \

Hint:

When considering the electromagnetic spectrum, remember that energy and frequency are directly proportional to each other, and inversely proportional to wavelength. X-rays are high-energy, high-frequency, and thus short-wavelength radiation.

Answer 1

The Correct Option is D

The electromagnetic spectrum is a continuous range of all possible electromagnetic radiation, characterized by wavelength, frequency, or photon energy. X-rays occupy a specific portion of this spectrum, typically defined by wavelengths shorter than ultraviolet light and longer than gamma rays. The approximate wavelength range for X-rays is generally considered to be from about 0.01 nanometers (nm) to 10 nanometers (nm). To put this into context:

• Visible light ranges from approximately 400 nm (violet) to 700 nm (red).
• Ultraviolet (UV) light ranges from about 10 nm to 400 nm.
• Gamma rays have wavelengths shorter than 0.01 nm.

Options (A) and (B) include ranges that are predominantly visible light or UV. Option (C) covers much longer wavelengths, characteristic of microwaves or radio waves.