One of the following is not a radiation detector
A
Electrophorus
B
Scintillation chamber
C
Geiger muller counter
D
Film badge
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
A. Electrophorus. It generates static electricity via induction and is not a radiation detector. The others are:
Scintillation chamber: Detects radiation via light flashes.
Geiger-Muller counter: A gas-filled detector for ionizing radiation.
Film badge: Records cumulative radiation exposure on photographic film.
Source: WAEC / JAMB / NECO Classroom Archive (Record #74557)