Question

The Geiger counter has high quantum efficiency in the wavelength range of

• A. 0.2 to 0.3
• B. 0.4 to 0.5
• C. 1.5 to 2.1
• D. 6 to 7

Hint:

Geiger counters are optimized for high-energy photons like X-rays and gamma rays.

Answer 1

The Correct Option is D

The Geiger-Müller counter is highly sensitive to ionizing radiation, particularly in the wavelength range of 6 to 7 angstroms (X-ray region). This is due to its high efficiency in detecting high-energy photons.