Question

The following statements are all true. Which one did Rutherford consider to be supported by the results of experiments in which α-particles were scattered by gold foil?(a) The nucleus of an atom is held together by forces which are much stronger than electrical or gravitational forces.(b) The force of repulsion between an atomic nucleus and an a-particle varies with distance according to inverse square law.(c) a-particles are nuclei of Helium atoms.(d) Atoms can exist with a series of discrete energy levels.

Answer 1

(a) The nucleus of an atom is held together by forceswhich are much stronger than an electrical or gravitational force

Answer 2

Answer:

The correct answer will be -

(B) The force of repulsion between an atomic nucleus and an α-particle varies with distance according to the inverse square law.

Explanation:

Given All the statements are True.

• The First statement is true but it was not shown by the Rutherford gold foil experiment. In the experiment, it was seen that there should be a dense nucleus that is positively charged. Nuclear forces were not known.
• The second statement is shown by the Rutherford gold foil experiment. The alpha particles which pass near the nucleus deflected more than the particles which passed far away from the nucleus and it followed the inverse square law.
• The third statement is true but was not shown by the Rutherford gold foil experiment. It was known earlier that alpha particles are nuclei of helium atoms.
• The fourth statement was not supported by the experiment. It was one of the limitations which were unexplained by the Rutherford.

#SPJ3