This question is about radioactivity and its uses. (a) Which of these radiations does not have a charge? A alpha B beta minus C beta plus D gamma (b) Which of these radiations is used in smoke detectors? A alpha B beta minus C beta plus D gamma (c) The diagram in Figure 13 shows a radioactive source used to check the thickness of paper. (i) Name the type of radiation used to check the thickness of the paper. (ii) Give the name of one device which could detect this type of radiation.

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This question is about radioactivity and its uses - Edexcel - GCSE Physics - Question 7 - 2023 - Paper 1

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This question is about radioactivity and its uses. (a) Which of these radiations does not have a charge? A alpha B beta minus C beta plus D gamma (b) Which of... show full transcript

Worked Solution & Example Answer:This question is about radioactivity and its uses - Edexcel - GCSE Physics - Question 7 - 2023 - Paper 1

Step 1

Which of these radiations does not have a charge?

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Answer

The correct answer is D gamma. Gamma radiation is electrically neutral and does not carry a charge, while alpha and beta particles have positive and negative charges respectively.

Step 2

Which of these radiations is used in smoke detectors?

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Answer

The answer is C beta minus. Beta particles are often used in smoke detectors because they can easily ionize air molecules, which is essential for the operation of the smoke detector.

Step 3

Name the type of radiation used to check the thickness of the paper.

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Answer

The type of radiation used to check the thickness of the paper is beta radiation (beta minus, β^-). This radiation is suitable for industrial applications due to its ability to penetrate materials.

Step 4

Give the name of one device which could detect this type of radiation.

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Answer

One device that could detect beta radiation is a Geiger-Müller counter. This device is commonly used in laboratories and industrial applications to measure ionizing radiation.

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This question is about radioactivity and its uses - Edexcel - GCSE Physics - Question 7 - 2023 - Paper 1

Worked Solution & Example Answer:This question is about radioactivity and its uses - Edexcel - GCSE Physics - Question 7 - 2023 - Paper 1

Which of these radiations does not have a charge?

Which of these radiations is used in smoke detectors?

Name the type of radiation used to check the thickness of the paper.

Give the name of one device which could detect this type of radiation.

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