A student is determining the corrected count rate of a radioactive sample. The total count rate measured by the detector in the presence of the sample is $RtotalR_{\text{total}}$ , and the background count rate measured in the absence of the sample is $RbackgroundR_{\text{background}}$ .

Which of the following equations correctly expresses the corrected count rate of the sample, $RsampleR_{\text{sample}}$ ?

$Rsample=Rtotal+RbackgroundR_{\text{sample}} = R_{\text{total}} + R_{\text{background}}$

$Rsample=Rtotal−RbackgroundR_{\text{sample}} = R_{\text{total}} - R_{\text{background}}$

$Rsample=Rbackground−RtotalR_{\text{sample}} = R_{\text{background}} - R_{\text{total}}$

$Rsample=Rtotal+Rbackground2R_{\text{sample}} = \frac{R_{\text{total}} + R_{\text{background}}}{2}$

Which of the following equations correctly expresses the corrected count rate of the sample, $RsampleR_{\text{sample}}$ ?

$Rsample=Rtotal+RbackgroundR_{\text{sample}} = R_{\text{total}} + R_{\text{background}}$

$Rsample=Rtotal−RbackgroundR_{\text{sample}} = R_{\text{total}} - R_{\text{background}}$

$Rsample=Rbackground−RtotalR_{\text{sample}} = R_{\text{background}} - R_{\text{total}}$

$Rsample=Rtotal+Rbackground2R_{\text{sample}} = \frac{R_{\text{total}} + R_{\text{background}}}{2}$

5.2.1 Background radiation and measuring count rate

Question 22

Markscheme

5.2.1 Background radiation and measuring count rate

Question 22

Markscheme

5.2.1 Background radiation and measuring count rate

Question 22

5.2.1 Background radiation and measuring count rate Questions

5.2.1 Background radiation and measuring count rate

Question 22

5.2.1 Background radiation and measuring count rate Questions