A Geiger Counter Registers a Count Rate of 8,000 Counts

question 141

Multiple Choice

A Geiger counter registers a count rate of 8,000 counts per minute from a sample of a radioisotope.The count rate 24 minutes later is 1,000 counts per minute.The half-life of the radioisotope is

• A)3 minutes.
• B)4 minutes.
• C)6 minutes.
• D)8 minutes.
• E)12 minutes.

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Definitions:

Positive Statement

An objective statement based on facts that can be tested and verified.

Education

The process of receiving or giving systematic instruction, especially at a school or university, that aims to improve knowledge and develop skills.

Wage Rate

The amount of money paid for a specific unit of time or work, often expressed per hour or per piece of work done.

Fallacy of Composition

The incorrect belief that what is true for the individual is necessarily true for the group as a whole.