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PHY 102 Test Compilation PHY 102 8 Objective Question
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Question

Radioactive source half-life 1 minute. Counting rate 2000 counts/s at t=0. Decay constant?
Options
A 1.66×10⁻² s⁻¹
B 1.06×10⁻² s⁻¹
C 1.26×10⁻² s⁻¹
D 1.16×10⁻² s⁻¹
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

λ = ln2 / t_{1/2} = 0.693 / 60 = 0.01155 s⁻¹ ≈ 1.16×10⁻² s⁻¹.

Hint

λ = ln2 / T½.

Question Info

Course: PHY 102
Topic: Test Compilation PHY 102 8
Type: Objective
Difficulty: Not specified
Question 575 of 1819
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