The particle which has its mass number and charge number equal to zero:
Correct answer: D. photon
- A. proton
- B. neutron
- C. electron
- D. photon
Explanation
A photon is a quantum of electromagnetic radiation, such as light. It has zero rest mass and zero electric charge. Protons, neutrons, and electrons all have non-zero values for at least one of these properties.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Nuclear Physics
Atomic nuclei contain protons and neutrons, with nuclear size, mass defect and binding energy describing their stability. The work covers alpha, beta and gamma decay, decay equations, half-life and decay rate, along with radiation safety and medical applications such as imaging, radiotherapy and tracers.
Practise Nuclear Physics
1,254 free Nuclear Physics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Nuclear Physics questions
The half-life of a radioactive isotope is 140 days. In how many days does the decay rate of a sample of this isotope decrease to one-fourth of its initial decay rate?
A large collection of nuclei are undergoing alpha decay. The rate of decay at any instant is proportional to:
The half-life of a radioactive substance is:
In an alpha decay, the disintegration energy appears chiefly as:
The α particle ionizes the particles in its way and adopts a path which is:
The half life of Radium is 1590 years. In how many years will the Earth lose all its radium due to radioactive decay?