Write a nuclear equation to show the pair annihilation of a positron and an electron - Leaving Cert Physics - Question 1 - 2020
Question 1
Write a nuclear equation to show the pair annihilation of a positron and an electron.
or
Draw the truth table for an OR gate.
Worked Solution & Example Answer:Write a nuclear equation to show the pair annihilation of a positron and an electron - Leaving Cert Physics - Question 1 - 2020
Step 1
Write a nuclear equation to show the pair annihilation of a positron and an electron.
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Answer
The nuclear equation for the pair annihilation of a positron (
e^+_eta) and an electron (
e^-_eta) can be represented as follows:
e++e−→2γ
This equation indicates that when a positron and an electron collide, they annihilate each other, resulting in the production of two gamma photons (( \gamma )).
Step 2
Draw the truth table for an OR gate.
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Answer
The truth table for an OR gate is represented below:
A
B
Output (A OR B)
0
0
0
0
1
1
1
0
1
1
1
1
In this table:
A and B are the inputs.
The Output column shows the result of the OR operation.
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