Q. No.In the nuclear decay given below:
the particles emitted in the sequence are:
1.
\(\beta, \alpha, \gamma
\)
2.
\(\gamma, \beta, \alpha
\)
3.
\(\beta, \gamma, \alpha
\)
4.
\(\alpha, \beta, \gamma\)
the particles emitted in the sequence are:
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2. Isomer of parent
3. Isotone of parent
4. Isotope of parent
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| 1. | \(M(A, Z)=ZM_p+(A-Z) M_n-B E / c^2\) |
| 2. | \({M}({A}, {Z})={ZM}_{p}+({A}-{Z}) {M}_{n}+{BE}\) |
| 3. | \(M(A, Z)=ZM_p+(A-Z) M_n-B E\) |
| 4. | \({M}({A}, {Z})={ZM}_{p}+({A}-{Z}) {M}_{n}+{BE/c}^2 \) |
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In radioactive decay process, the negatively charged emitted β-particles are:
1. the electrons present inside the nucleus
2. the electrons produced as a result of the decay of neutrons inside the nucleus
3. the electrons produced as a result of collisions between atoms
4. the electrons orbiting around the nucleus
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A nucleus has mass represented by M(A, Z). If Mp and Mn denote the mass of proton and neutron respectively and BE the binding energy, then :
1.
2.
3.
4.
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Two radioactive substances A and B have decay constants 5λ and λ respectively. At t = 0 they have the same number of nuclei. The ratio of the number of nuclei of A to those of B will be after a time interval:
1.
2.
3.
4.
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| 1. | \(25.8\) MeV | 2. | \(23.6\) MeV |
| 3. | \(19.2\) MeV | 4. | \(30.2\) MeV |
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In a radioactive material, the activity at time t1 is R1 and at a later time t2, it is R2. If the decay constant of the material is λ, then:
1.
2.
3.
4.
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The radius of Germanium (Ge) nuclide is measured to be twice the radius of . The number of nucleons in Ge are:
1. 73
2. 74
3. 75
4. 72
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-particle consists of:
1. 2 protons only
2. 2 protons and 2 neutrons only
3, 2 electrons, 2 protons, and 2 neutrons
4. 2 electrons and 4 protons only
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