Physics Nuclear Physics ETEA 2022
PMDC Verified Question 37 of 98
Which one is not the unit of radio-activity?
A
Bq
B
Ci
C
Decay/second
D
\(\text{Tesla}/\text{m}^2\)
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: \(\text{Tesla}/\text{m}^2\)


Concept:

Radioactivity (Activity) measures the absolute rate of nuclear decay events per unit time.

Solution:

  • Bq (Becquerel): The SI unit, equal to 1 decay per second.


  • Decay/second: The literal definition of activity.


  • Ci (Curie): A historical unit equal to \(3.7 \times 10^{10}\) decays per second.


  • Tesla (T) is the SI unit of magnetic field strength. Combining it with square meters does not form a unit of nuclear activity.


Why other options are incorrect:

Options A, B, and C are all valid, widely recognized units for measuring radioactive decay.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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