Auto Principle Instructions: Answer Any Five Questions. Q1. Define, Explain the following heat related terms: i. Sensible Heat ii. Latent Heat iii. Latent Heat of fusion iv. Latent Heat of Vaporization.

Here are the definitions for the heat-related terms:

• Sensible Heat: This is the heat energy transferred to a substance that results in a change in its temperature without changing its phase (e.g., heating water from $20^\circ\text{C}$ to $80^\circ\text{C}$).
• Latent Heat: This is the heat energy absorbed or released by a substance during a phase change (e.g., melting, freezing, boiling, condensation) without a change in its temperature.
• Latent Heat of Fusion: This is the amount of heat energy required to change a unit mass of a substance from a solid to a liquid state at its melting point, without any change in temperature. For example, melting ice into water at $0^\circ\text{C}$.
• Latent Heat of Vaporization: This is the amount of heat energy required to change a unit mass of a substance from a liquid to a gaseous state at its boiling point, without any change in temperature. For example, boiling water into steam at $100^\circ\text{C}$.