Nuclear Physics - Set 1

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MM

Mashaal Masha

Oct 16, 2022

Choose the correct options for the following questions.

Neutron was suggested to be in the nucleus by:

Difficulty: Easy

A:

Rutherford in 1920

B:

Bohr in 1913

C:

Dirac in 1928

D:

Anderson in 1932

Neutron was discovered by:

Difficulty: Easy

A:

Rutherford in 1920

B:

Chadwick in 1932

C:

Charge and mass of a proton are respectively:

D:

Compton in 1927

The ratio of the radii of an atom and its nucleus is roughly equal to:

Difficulty: Easy

A:

10^{5} cm

B:

10^{5}

C:

10^{5} m

D:

10^{-5} m

Nucleus means:

Difficulty: Easy

A:

Only electrons

B:

Only neutrons

C:

Only protons

D:

Both b and c

Charge and mass of a proton are respectively:

Difficulty: Easy

A:

zero, $1.673 \times 10^{-27}kg$

B:

1.673 \times 10^{-27} coul, 1.6 \times 10^{-19} kg

C:

1.6 \times 10^{-19} coul, 1.673 \times 10^{-27} kg

D:

9.1 \times 10^{-31} kg, 1.67 \times 10^{-27} coul

Mass of neutron is exactly:

Difficulty: Easy

A:

1.675\times 10^{-27} kg

B:

9.1\times 10^{-31} kg

C:

1.675\times 10^{-19} kg

D:

1.6\times 10^{-19} kg

In the unit of unified mass scales, the mass of an electron is:

Difficulty: Easy

A:

1.007276u

B:

1.008665u

C:

0.00055u

D:

0.000055u

Unified mass scale means that atomic mass is expressed in:

Difficulty: Easy

A:

Kg

B:

Gram

C:

Atomic mass unit

D:

None

The figure 1.007276u shows the mass of an:

Difficulty: Easy

A:

Atom

B:

Positron

C:

Electron

D:

Proton

In a neutral atom, the number of protons are always:

Difficulty: Easy

A:

Greater than number of neutrons

B:

Smaller than the number of electrons

C:

Equal to the number of neutrons

D:

Equal to the number of electrons

Nuclear Physics - Set 1