A CAT scanner uses X-rays. It is used in hospitals to ‘see’ inside the body. (i) Describe one other use of X-rays. (ii) The diagram shows a CAT scanner in use. Label the two parts of the scanner. (b) A beam of electrons is needed to produce X-rays. Explain how this beam of electrons is produced.

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A CAT scanner uses X-rays - Edexcel - GCSE Physics - Question 3 - 2015 - Paper 1

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A CAT scanner uses X-rays. It is used in hospitals to ‘see’ inside the body. (i) Describe one other use of X-rays. (ii) The diagram shows a CAT scanner in use. Lab... show full transcript

Worked Solution & Example Answer:A CAT scanner uses X-rays - Edexcel - GCSE Physics - Question 3 - 2015 - Paper 1

Step 1

Describe one other use of X-rays.

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Answer

One other use of X-rays is in security applications, such as in airports, where they are used to detect illegal items. X-rays are effective in identifying hidden contrabands by exposing them through their different absorption characteristics.

Step 2

Label the two parts of the scanner.

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Answer

The upper part of the scanner is labeled as the X-ray tube while the lower part is labeled as the detector.

Step 3

Explain how this beam of electrons is produced.

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Answer

The beam of electrons is produced when a heated filament generates electrons. These electrons are emitted from the filament and are attracted towards the anode, which is set at a positive voltage. The potential difference created accelerates the electrons, allowing them to collide with the target material, thereby producing X-rays.

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A CAT scanner uses X-rays - Edexcel - GCSE Physics - Question 3 - 2015 - Paper 1

Worked Solution & Example Answer:A CAT scanner uses X-rays - Edexcel - GCSE Physics - Question 3 - 2015 - Paper 1

Describe one other use of X-rays.

Label the two parts of the scanner.

Explain how this beam of electrons is produced.

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