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. Labe... 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 at airports, where they help to scan luggage and detect illegal items such as weapons. X-rays are effective because they can penetrate materials and create images based on different density levels.

Step 2

Label the two parts of the scanner.

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Answer

The upper part of the scanner should be labeled as 'X-ray tube' and the lower part should be labeled as 'detector'.

Step 3

Explain how this beam of electrons is produced.

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Answer

A beam of electrons is produced by heating a filament, which generates a cloud of electrons around it. This cloud is then accelerated towards the anode by applying a high voltage, typically across a vacuum, allowing the electrons to stream towards the target and produce X-rays upon impact.

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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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