PHYSICS · Single correct · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter
Problem
When an ice sample is heated at constant pressure, its temperature–time graph shows a horizontal line at 0∘C. What does this horizontal segment signify?
(a) Heat losses to the surroundings exactly balance the heat being supplied.
(b) The heat supplied is used to convert ice into water at the melting point, so temperature remains constant.
(c) The ice is simply being warmed in its solid form.
(d) The thermometer is malfunctioning, hence the reading does not change.