The binding energies of the nuclei A and B are respectively. Three atoms of the element B fuse to give one atom of element A and an energy Q is released. Then and Q are related as:
1.
2.
3.
4.
The radius of a nucleus of a mass number A is directly proportional to [MH CET 1999; AMU (En.) 2001; UPSEAT 2004; DUMET 2010]
1.
2. A
3.
4.
What is the radius of iodine atom? (atomic no. 53, mass no. 126) [1988]
1.
2.
3.
4.
Which of the following statements is true for nuclear forces? [1990]
1. They obey the inverse square law of distance.
2. They obey the inverse third power law of distance.
3. They are short range forces.
4. They are equal in strength to electromagnetic forces.
The mass density of a nucleus varies with mass number A as [1992]
1.
2. A
3. Constant
4.
The binding energy per nucleon of deuterium and helium atom is 1.1 MeV and 7.0 MeV. If two deuterium nuclei fuse to form a helium atom, the energy released is:
1. 19.2 MeV
2. 23.6 MeV
3. 26.9 MeV
4. 13.9 MeV
In a fission reaction,
\(^{236}_{92}U\rightarrow ~^{117}X~+~^{117}Y~+~^1_0n~+~^1_0n,\) the binding energy per nucleon of X and Y is 8.5 MeV whereas that of \(^{236}U\) is 7.6 MeV. The total energy liberated will be about:
1. 2000 MeV
2. 200 MeV
3. 2 MeV
4. 1 keV
The mass of is 15.00011 amu, mass of is 15.99492 amu and = 1.00783 amu. Determine the binding energy of the last proton of \({ }_8 O_{16}\).
1. 2.13 MeV
2. 0.13 MeV
3. 10 MeV
4. 12.13 MeV
The energy released by the fission of one uranium atom is 200 MeV. The number of fission per second required to produce 3.2 W of power is (Take, 1 eV = 1.6) [WB JEE 2010]
1.
2.
3.
4.
The nuclei of which one of the following pairs of nuclei are isotones? [2005]
1.
2.
3.
4.