General Knowledge :: Physics
- Electrical burns occur principally because of
- As water is cooled from 4 deg C to 0 deg C, its density
- Fish and other aquatic creatures can live inside a deep frozen pond because
- The density of a gas is maximum at
- Lakes freeze in cold countries in winter, leaving the water underneath at
- A bimetal made copper and iron strips welded together is straight at room temperature. It is held vertically with iron strip towards left and copper strip towards right. If this bimetal is heated, it will
- Thermal expansion of materials arises from