Assertion (A): | If electrons in an atom were stationary, then they would fall into the nucleus. |
Reason (R): | Electrostatic force of attraction acts between negatively charged electrons and positive nucleus. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |
Assertion (A): | Electrons in the atom are held due to coulomb forces. |
Reason (R): | The atom is stable only because the centripetal force due to Coulomb's law is balanced by the centrifugal force. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Assertion (A): | If two charged bodies placed near each other attract each other then they must be oppositely charged. |
Reason (R): | Unlike charges repel each other and like charges attract each other. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |