Assertion (A): | A bubble comes from the bottom of a lake to the top. |
Reason (R): | Its radius increases. |
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): | A scuba diver inhales enough air from his oxygen tank to fully expand his lungs while at bottom of the swimming pool. During his ascent towards the water's surface, if he does not exhale, he suffers heart failure. |
Reason (R): | As he ascends, the air pressure in the lungs causes rupture of the lungs. |
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. |
Statement I: | The pressure at the bottom of a vessel containing water is proportional to the height of the water. |
Statement II: | When water begins to flow out of a small hole in a tank (after the hole is opened), the pressure of water inside the tank near the hole decreases. |
1. | Statement I is incorrect and Statement II is correct. |
2. | Both Statement I and Statement II are correct. |
3. | Both Statement I and Statement II are incorrect. |
4. | Statement I is correct and Statement II is incorrect. |