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 […]
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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
An LCR circuit contains resistance of 100 ohm and a supply of 200 volt at 300 radian
An LCR circuit contains resistance of 100 ohm and a supply of 200 volt at 300 radian angular frequency. If only capacitance is taken out from the circuit and the rest of the circuit is […]
If doubly ionised lithium atom is hydrogen like with atomic number 3, the wavelength
If doubly ionised lithium atom is hydrogen like with atomic number 3, the wavelength of radiation required to excite the electron in Li⁺⁺ from the first to the third Bohr orbit and the number of […]
A block of wood weighs 10 N and is resting on an inclined plane. The coefficient
A block of wood weighs 10 N and is resting on an inclined plane. The coefficient of friction is 0.7. The frictional force that acts on the block, when the plane is 30° inclined with […]
A gas of monoatomic hydrogen is bombarded with a stream of electrons
A gas of monoatomic hydrogen is bombarded with a stream of electrons that have been accelerated from rest through a potential difference of 12.75 volt. In the emission spectrum one can observe lines of
The friction of the air causes a vertical retardation equal to 10%
The friction of the air causes a vertical retardation equal to 10% of the acceleration due to gravity (take g=10 ms⁻²). The maximum height will be decreased by
Options
(a) 8% (b) 9% […]
Excitation energy of a hydrogen like ion, in its first excitation state, is 40.8 eV.
Excitation energy of a hydrogen like ion, in its first excitation state, is 40.8 eV. The energy needed to remove the electron from the ion in ground state is
Options
(a) 13.6 eV […]