Question

If we put a burning candle with water inside an upside down glass. the water rises. why?
​

Answer 1

Answer:

As the air in the inverted glass is in contact with water, it will contain saturated vapour. When the candle goes off and the temperature falls, saturation vapour pressure also decreases and some of the vapour condenses. This also decreases pressure inside and helps in rise of water.

kindly Mark as BRAINLIST ANSWER

Answer 2

$\huge\underline \color{lightgreen}ANSWER$

We know that a candle burns with the help of Oxygen.

So when we put a glass upside down on a plate containing the water and burning candle, the oxygen supply is cut off.

The candle uses up the rest of the oxygen in the glass.

Since there's only limited amount of air, vaccum is formed in the glass after the oxygen is used up.

Due to the vaccum formed inside the glass, the water is sucked in as air pressure reduces inside the glass and increases outside.

Water is sucked in till the candle light goes off.