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

Explain why water wets glass.

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.