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Which diagram represents the process of beta-plus decay? A B C D - AQA - A-Level Physics - Question 9 - 2017 - Paper 1

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Question 9

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Which diagram represents the process of beta-plus decay? A B C D

Worked Solution & Example Answer:Which diagram represents the process of beta-plus decay? A B C D - AQA - A-Level Physics - Question 9 - 2017 - Paper 1

Step 1

Identify the Beta-Plus Decay Process

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Answer

Beta-plus decay occurs when a proton in a nucleus converts into a neutron, emitting a positron (β⁺) and a neutrino (νₑ). The W+ boson mediates this process, converting the proton to a neutron.

Step 2

Analyze Each Diagram

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Answer

In the diagrams, we need to identify which representation shows the emission of a positron and a neutrino while a proton is transformed into a neutron. The correct diagram will display the W+ boson facilitating this transformation with the appropriate particles indicated.

Step 3

Select the Correct Diagram

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Answer

From the diagrams presented, option B accurately represents the process of beta-plus decay, showing the W+ boson mediating the proton emission of a positron and a neutrino.

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