Rutherford's Alpha Scattering Experiment

Q. Which of the following observations of α-particle scattering experiment led to the presence of a small positively charged nucleus in the centre?

1. Very few α-particles rebounded
2. None of the above
3. Most of the α–particles passed through the gold foil undeflected
4. Only a few α-particles deflected away from their path after passing through the gold foil

Q. Rutherford used alpha particles in his experiment. The charge of alpha particles is _________.

1. -2
2. +2
3. -1
4. +4

Q. Assertion :In the Rutherford experiment, most of the $\alpha$ particles passed without any deviation through the gold foil. Reason: The entire positive charge and nearly all of the mass of an atom is concentrated in the centre of the atom known as nucleus.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Assertion is incorrect but Reason is correct

Q. what do you think would be the observation if alpha particle scattering experiment is carried out on (i) heavy nucleus like platinum (ii) light nuclei like lithium

Q. Rutherford used alpha particles in his experiment. The charge of alpha particles is _________.

1. +2
2. -2
3. -1
4. +4

Q. Given reason : (b) very few Alpha particle Retraced their parts because