Which of the following particles are constituents of the nucleus 

(1) Protons and electrons           

(2) Protons and neutrons

(3) Neutrons and electrons         

(4) Neutrons and positrons

Nuclear binding energy is equivalent to 

(1) Mass of proton       

(2) Mass of neutron

(3) Mass of nucleus     

(4) Mass defect of nucleus

If the binding energy of the deutrium is 2.23 MeV.
The mass defect given in a.m.u. is 

(1) – 0.0024           

(2) – 0.0012

(3) 0.0012               

(4) 0.0024

Which of the following has the mass closest in value to that of the positron 

(1) Proton         

(2) Electron

(3) Photon         

(4) Neutrino

(1 amu = 931 MeV)

Size of nucleus is of the order of

(1) ${10}^{-10} \mathrm{m}$            

(2) ${10}^{-15 }\mathrm{m}$

(3) ${10}^{-12} \mathrm{m}$             

(4) ${10}^{-19} \mathrm{m}$

For effective nuclear forces, the distance should be

(1) ${10}^{-10} \mathrm{m}$         

(2) ${10}^{-13} \mathrm{m}$

(3) ${10}^{-15} \mathrm{m}$         

(4) ${10}^{-20} \mathrm{m}$

The masses of neutron and proton are 1.0087 a.m.u. and 1.0073 a.m.u. respectively. If the neutrons and protons combine to form a helium nucleus (alpha particle) of mass 4.0015 a.m.u. The binding energy of the helium nucleus will be (1 a.m.u.= 931 MeV) :

(1) 28.4 MeV               

(2) 20.8 MeV

(3) 27.3 MeV               

(4) 14.2 MeV

Atomic power station at Tarapore has a generating capacity of 200 MW. The energy generated in a day by this station is

(1) 200 MW               

(2) 200 J

(3) $4800\times {10}^6 \mathrm{J}$          

(4) $1728\times {10}^{10}$ J

One nanogram of matter converted into energy will give- 

(1) 90 J                     

(2) $9\times {10}^3 \mathrm{J}$ 

(3) $9\times {10}^{10} \mathrm{J}$            

(4) \(9\times 10^{4}~J\)

The binding energy of deuteron ${}_1{}^2\mathrm{H}$ is 1.112 MeV per nucleon and an $\mathrm{\alpha }$-particle ${}_2{}^4\mathrm{He}$ has a binding energy of 7.047 MeV per nucleon. Then in the fusion reaction ${}_1{}^2\mathrm{H}+{}_1{}^2\mathrm{H}\to {}_2{}^4\mathrm{He}+\mathrm{Q}$, the energy Q released is

(1) 1 MeV             

(2) 11.9 MeV

(3) 23.8 MeV         

(4) 931 MeV