A nuclear reactor is a device used to carry out controlled nuclear reaction whereas GM counter is a device used to detect:

(A) Current
(B) Voltage
(C) Nuclear Radiation
(D) Power

Q. Geiger-Müller (GM) tube is used for detection of ionizing radiation was named after:
(A) Hans Geiger, Walther Müller
(B) William Geiger, Walther Müller
(C) Robert Geiger, Walther Müller
(D) None of these

Q. A device used for the detection and measurement of all types of radiations is:
(A) Scintillation Counter
(B) Geiger-Müller Tube
(C) Gamma-ray detector
(D) None of these

Answers:
1. (C) Nucleus Radiation
2. (A) Hans Geiger, Walther Müller
3. (B) Geiger-Müller Tube