The Activity of a Radioactive Sample Is Defined as the Number

question 65

Multiple Choice

The activity of a radioactive sample is defined as the number of decays per second.For a sample with N particles and a decay constant $\lambda$ ,the activity is

• A)proportional to \(\lambda\) and inversely proportional to N.
• B)proportional to \(\lambda\) but independent of N.
• C)directly proportional to both \(\lambda\) and N.
• D)independent of \(\lambda\) but proportional to N.
• E)inversely proportional to both \(\lambda\) and N.

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Definitions:

Express Contract

A clearly stated agreement, either written or spoken, where the terms are explicitly stated by all parties involved.

Periodic Tenancy

A lease interest in land for an indefinite period involving payment of rent at fixed intervals, such as week to week, month to month, or year to year.

Specify

To state or describe something clearly and precisely.

Revoke

To officially cancel, withdraw, or annul a decision, order, or agreement.