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Positron is -...

Positron is -

A

A nucleus with one neutron and one proton

B

A nucleus with two proton

C

A helium nucleus

D

Electron with `+ve` charge

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Positron**: A positron is defined as the antiparticle of an electron. This means it has properties that are opposite to those of an electron. 2. **Charge of Positron**: The positron carries a positive electric charge of +1, while an electron carries a negative charge of -1. 3. **Mass of Positron**: The mass of a positron is the same as that of an electron. Both particles have a mass of approximately 9.11 × 10^-31 kg. 4. **Spin of Positron**: Like electrons, positrons have a spin of 1/2, which is a fundamental property of particles related to their intrinsic angular momentum. 5. **Evaluating Options**: Given the options A, B, C, and D, we can eliminate those that do not match the properties of a positron. For example, a nucleus with one neutron and one proton or a helium nucleus (which has two protons) does not describe a positron. 6. **Conclusion**: Based on the properties discussed, the correct option that describes a positron is option D. **Final Answer**: D (Positron is the antiparticle of an electron with a positive charge, same mass as an electron, and a spin of 1/2). ---
**Step-by-Step Solution:** 1. **Understanding Positron**: A positron is defined as the antiparticle of an electron. This means it has properties that are opposite to those of an electron. 2. **Charge of Positron**: The positron carries a positive electric charge of +1, while an electron carries a negative charge of -1. 3. **Mass of Positron**: The mass of a positron is the same as that of an electron. Both particles have a mass of approximately 9.11 × 10^-31 kg. ...
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Knowledge Check

  • Positronium is just like a H-atom with the proton replaced by the positively charged anti-particle of the electron (called the positron which is as massive as the electron). What would be the ground state energy of positronium ?

    A
    `3.4eV`
    B
    `-5.2eV`
    C
    `-6.8eV`
    D
    `-10.2eV`

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