363941
The particles not emitted by radioactive substance are
1 gamma rays
2 electrons
3 protons
4 He nuclei
Explanation:
\({\gamma}\)-ray, electron and He nuclei or \({\alpha}\)-particle decay form radioactive substances but not the proton. So correct option is (3)
PHXII13:NUCLEI
363942
Assertion : During a negative beta decay, only an electron is spontaneously formed during nuclear reaction. Reason : \(\beta^{+}\)decay is also a probable process.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
\(n \rightarrow p+\left(\beta^{-}\right)+\bar{v}\) \(p \rightarrow n+\left(\beta^{+}\right)+v\) In either, \(\left(\dfrac{n}{p}\right)\) ratio is modified for stability. So correct option is (1).
PHXII13:NUCLEI
363943
In which radiation atomic number and mass number are not affected?
1 \(\alpha\)-radiation
2 \(\gamma\)-radiation
3 \(\beta\)-radiation
4 None of these
Explanation:
In \(\gamma\)-radiation, no change occurs in mass number and atomic number because its rest mass is zero and it is neutral for electric and magnetic fields.In \(\alpha\)-radiation, atomic number is decreased by 2 units and atomic mass is decreased by 4 units.In \(\beta\)-radiation, no change occurs in atomic mass but atomic number increases by 1 unit.
363941
The particles not emitted by radioactive substance are
1 gamma rays
2 electrons
3 protons
4 He nuclei
Explanation:
\({\gamma}\)-ray, electron and He nuclei or \({\alpha}\)-particle decay form radioactive substances but not the proton. So correct option is (3)
PHXII13:NUCLEI
363942
Assertion : During a negative beta decay, only an electron is spontaneously formed during nuclear reaction. Reason : \(\beta^{+}\)decay is also a probable process.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
\(n \rightarrow p+\left(\beta^{-}\right)+\bar{v}\) \(p \rightarrow n+\left(\beta^{+}\right)+v\) In either, \(\left(\dfrac{n}{p}\right)\) ratio is modified for stability. So correct option is (1).
PHXII13:NUCLEI
363943
In which radiation atomic number and mass number are not affected?
1 \(\alpha\)-radiation
2 \(\gamma\)-radiation
3 \(\beta\)-radiation
4 None of these
Explanation:
In \(\gamma\)-radiation, no change occurs in mass number and atomic number because its rest mass is zero and it is neutral for electric and magnetic fields.In \(\alpha\)-radiation, atomic number is decreased by 2 units and atomic mass is decreased by 4 units.In \(\beta\)-radiation, no change occurs in atomic mass but atomic number increases by 1 unit.
363941
The particles not emitted by radioactive substance are
1 gamma rays
2 electrons
3 protons
4 He nuclei
Explanation:
\({\gamma}\)-ray, electron and He nuclei or \({\alpha}\)-particle decay form radioactive substances but not the proton. So correct option is (3)
PHXII13:NUCLEI
363942
Assertion : During a negative beta decay, only an electron is spontaneously formed during nuclear reaction. Reason : \(\beta^{+}\)decay is also a probable process.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
\(n \rightarrow p+\left(\beta^{-}\right)+\bar{v}\) \(p \rightarrow n+\left(\beta^{+}\right)+v\) In either, \(\left(\dfrac{n}{p}\right)\) ratio is modified for stability. So correct option is (1).
PHXII13:NUCLEI
363943
In which radiation atomic number and mass number are not affected?
1 \(\alpha\)-radiation
2 \(\gamma\)-radiation
3 \(\beta\)-radiation
4 None of these
Explanation:
In \(\gamma\)-radiation, no change occurs in mass number and atomic number because its rest mass is zero and it is neutral for electric and magnetic fields.In \(\alpha\)-radiation, atomic number is decreased by 2 units and atomic mass is decreased by 4 units.In \(\beta\)-radiation, no change occurs in atomic mass but atomic number increases by 1 unit.
363941
The particles not emitted by radioactive substance are
1 gamma rays
2 electrons
3 protons
4 He nuclei
Explanation:
\({\gamma}\)-ray, electron and He nuclei or \({\alpha}\)-particle decay form radioactive substances but not the proton. So correct option is (3)
PHXII13:NUCLEI
363942
Assertion : During a negative beta decay, only an electron is spontaneously formed during nuclear reaction. Reason : \(\beta^{+}\)decay is also a probable process.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
\(n \rightarrow p+\left(\beta^{-}\right)+\bar{v}\) \(p \rightarrow n+\left(\beta^{+}\right)+v\) In either, \(\left(\dfrac{n}{p}\right)\) ratio is modified for stability. So correct option is (1).
PHXII13:NUCLEI
363943
In which radiation atomic number and mass number are not affected?
1 \(\alpha\)-radiation
2 \(\gamma\)-radiation
3 \(\beta\)-radiation
4 None of these
Explanation:
In \(\gamma\)-radiation, no change occurs in mass number and atomic number because its rest mass is zero and it is neutral for electric and magnetic fields.In \(\alpha\)-radiation, atomic number is decreased by 2 units and atomic mass is decreased by 4 units.In \(\beta\)-radiation, no change occurs in atomic mass but atomic number increases by 1 unit.
