Rutherford's Alpha Scattering Experiment

Q. The radius of an atomic nucleus is of the order of:

1. ${10}^{-10}\text{cm}$
2. ${10}^{-13}\text{cm}$
3. ${10}^{-15}\text{cm}$
4. ${10}^{-8}\text{cm}$

Q. Which of the following statements about Rutherford's model of an atom is not correct?

1. Most of the atom's mass is concentrated in an extremely small region called nucleus
2. Electrons move around the nucleus in orbits
3. Electrons and nucleus are held together by electrostatic forces of attraction
4. The model explained the stability of an atom

Q.

Rutherford's alpha particle scattering experiment eventually led to the conclusion that

1. Mass and energy are related

2. Electrons occupy space around the nucleus

3. Neutrons are buried deep in the nucleus

4. The point of impact with matter can be precisely determined

Q. According to the Rutherford model of the atom, which of the following statement(s) is/are correct regarding an electron revolving around the nucleus of an unielectronic system

1. The net force acting on electron is zero
2. Rate of change of speed of the electron is constant
3. Rate of change of velocity of the electron is constant
4. The net force acting on electron is provided by electrostatic attraction

Q. Rutherford’s experiment lead to the discovery of which of the following?

1. Electron
2. Proton
3. Neutron
4. Nucleus

Q.

From the $\alpha$-particle scattering experiment, Rutherford concluded that

1. $\alpha$-particles can come within a distance of the of ${10}^{-15}m$ of the nucleus.

2. The radius of the nucleus is less that ${10}^{-15}m$.

3. The scattering follows Coulomb's law.

4. The positively charged parts of the atom move with extremely high velocities.

Q. Assertion (A): An aluminium foil cannot be used in the α- particle scattering experiment.
Reason (R): Aluminium is a malleable metal.

1. Both the assertion and the reason are correct and the reason is the correct explanation of the assertion.
2. Both the assertion and the reason are correct but, the reason is not the correct explanation of the assertion.
3. The assertion is correct and the reason is incorrect.
4. The assertion is incorrect and the reason is correct.

Q. Which of the following statements is/ are the drawback(s) of the Rutherford's model?

1. It could not explain the stability of atoms
2. It was unable to explain the line spectrum of hydrogen atoms
3. It does not explain the distribution of electrons around nuclei
4. All of the above statements are correct
   

Q.

What do you think what would be the observation if the alpha particle sacttering experiemnet is carried out using a foil a metal other than gold

Q. Which of the following statements about Rutherford's model of an atom is not correct?

1. Most of the atom's mass is concentrated in an extremely small region called nucleus
2. Electrons move around the nucleus in orbits
3. Electrons and nucleus are held together by electrostatic forces of attraction
4. The model explained the stability of an atom

Q. The correct statements among the following is

1. Thomson was not aware of the knowledge of the protons and neutrons when he proposed plum pudding model
2. The mass of the atom is uniformly distributed throughout the atom according to plum pudding model
3. Rutherford was not aware of the knowledge of protons and neutrons when he proposed his model of atom
4. The mass of the atom is not uniformly distributed throughout the atom according to Rutherford model

Q.

According to Rutherford's model, the positive charge is concentrated in a very small volume. (True/False)

1. True

2. False