The binding energy of deutron is 2.2 MeV and that of ₂⁴He is 28 MeV.
The binding energy of deutron is 2.2 MeV and that of ₂⁴He is 28 MeV. If two deutrons are fused to form one ₂⁴He then the energy released is
Options
(a) 30.2 MeV (b) […]
Physics
The operation of a nuclear reactor is said to be critical, if the multiplication
The operation of a nuclear reactor is said to be critical, if the multiplication factor(k) has a value
Options
(a) 1 (b) 1.5 (c) 2.1 (d) 2.5
Correct Answer:
1
Explanation:
No explanation […]
The emission line of Lyman corresponds to the absorption line in laboratory temperature
The emission line of Lyman corresponds to the absorption line in laboratory temperature. The emission line of Balmer at room temperature
Options
(a) corresponds to the absorption line of Balmer series (b) does […]
In which case positive work has to be done in seperating them?
In which case positive work has to be done in seperating them?
Options
(a) electron-electron (b) proton-proton (c) neutron-neutron (d) electron-neutral atom
Correct Answer:
electron-neutral atom
Explanation:
No explanation available. Be the first […]
The order of distance of an electron revolving in an atom from nucleus is
The order of distance of an electron revolving in an atom from nucleus is
Options
(a) 10⁻¹² m (b) 10⁻¹⁰ m (c) 10⁻⁸ m (d) 10⁻¹⁴ m
Correct Answer:
10⁻¹⁴ m
Explanation:
No […]
The atomic number of the most common element in nuclear fusion is
The atomic number of the most common element in nuclear fusion is
Options
(a) 92 (b) 80 (c) 30 (d) 1
Correct Answer:
1
Explanation:
No explanation available. Be the first to write […]
The half life of a radioactive isotope ‘X’ is 20 years. It decays to another element Y
The half life of a radioactive isotope ‘X’ is 20 years. It decays to another element ‘Y’ which is stable. The two elements ‘X’ and ‘Y’ were found to be in the ratio of 1 […]
Two nuclei are said to be mirror nuclei of
Two nuclei are said to be mirror nuclei of
Options
(a) number of protons in the two nuclei are equal (b) number of neutrons in the two are equal (c) number of neutrons […]
The moderator in a reactor
The moderator in a reactor
Options
(a) absorbs neutrons (b) accelerates neutrons (c) slows down neutrons (d) absorbs thermal energy produced in the reactor
Correct Answer:
slows down neutrons
Explanation:
No explanation available. […]
In nuclear fusion, two nuclei come together to form a large nucleus.
In nuclear fusion, two nuclei come together to form a large nucleus. Which of the following is a correct equation for such a reaction?
Options
(a) ₉₈Cf²⁵³→₉₉Th²⁵³+₋₁e⁰ (b) ₄Be⁹→₂He⁴+2He⁴+₀n¹ (c) ₁H²+₁H³→₂He⁴+₀n¹+₁e⁰ (d) ₉₂U²³⁸+₀n¹→₉₂U²³⁹