Structure of Nucleus

Radius of uranium nucleus is (take R0=1.2x10 -15m )

• 7.13 x10-15 m
• 7.23 x 10-15 m
• 7.33 x10-15 m
• 7.43 x10-15 m

For effective nuclear forces, The distance should be

• 10-10 m
• 10-13 m
• 10-15 m
• 10-20 m

The neutrons was discovered by

• Marie Curie
• Pierre Curie
• James Chadwick
• Rutherford

Nuclear Density of iron is 2.29×1017kg/m3 , Given, the Mass of iron nucleus 55.85a.m.u Find the volume of nucleus and hence the mass number of iron

• 50
• 45
• 58
• 56

Calculate energy equivalent to 16mg in eV

• 8x10 20eV
• 4x10 12 eV
• 9x10 30 eV
• 5x10 40 eV

Express 25mg mass into equivalent energy in eV

• 1.4 x10 31 eV
• 1.2x10 21 eV
• 1.4x10 22eV
• 1.7x10 31 eV

Compare the radii nuclei with mass numbers 1 and 27 respectively

• 2/5
• 1/3
• 5/1
• 1/2

The nuclear radius 16O8 is 3x10-15m , what is nuclear radius of 205 Pb92 ?

• 7.02×10-15 m
• 5.03x10-2m
• 18.0x10-10 m
• 4.03x10-12 m

Binding Energy of 2He4 and 3Li7 nuclei are 27.37Mev and 39.3MeV respectively , Which of two nuclei is more stable ?

• 3He2
• 4He3
• 7He2
• 2He4

Charge on Nucleus is

• Positive
• Negative
• Neutral
• zero