DP Physics (last assessment 2024)

Test builder »

Question 18M.1.SL.TZ2.24

Select a Test
Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.1.SL.TZ2.24
Level SL Paper 1 Time zone TZ2
Command term Question number 24 Adapted from N/A
24.
[Maximum mark: 1]
18M.1.SL.TZ2.24

A detector, placed close to a radioactive source, detects an activity of 260 Bq. The average background activity at this location is 20 Bq. The radioactive nuclide has a half-life of 9 hours.

What activity is detected after 36 hours?

A.     15 Bq

B.     16 Bq

C.     20 Bq

D.     35 Bq

[1]

Markscheme

D

Syllabus sections