The bottle will look crushed inward.
Step-by-step explanation:
- While you are travelling in a plane at a cruising altitude and you had drunk enough water and made the bottle empty,you seal the bottle with a cap. Now there is air occupied inside the bottle.
- At the time of landing, the empty bottle look crushed. This is due to the air pushing the bottle from outside is greater than the air inside the bottle pushing out. Hence there will be an imbalance occur.So the bottle look crushed inward.