If a potted plant is covered with a glass jar, water vapours appear on the wall of glass jar. Explain.

Explain why water wets glass.

A cork ball is floating on the surface of water in a beaker. The beaker is covered with a bell jar and the air is evacuted. What wil happen to the ball ?

Two identical lead shots are dropped at the same time in two glass jars containing water and glycerin. The glass jars containing water and gycerin. The lead shot dropped in glycerin descends slowly because

Explain why: Solar cookers are covered with glass plate.

Explain why: Solar cookers are covered with glass plate.

A block of wood is floating on the surface of water in a beaker. The beaker is covered with a bell jar and the air is evacuated. What will happen to the block ?

A block of wood is floating on the surface of water in a beaker. The beaker is covered with a bell jar and the air is evacuated. What will happen to the block ?