Question

The difference between the initial and the final temperature divided by the freezing time is known as

• A. Freezing Time
• B. Freezing Rate
• C. Thawing Time
• D. Thawing Rate

Hint:

In physics and engineering, the term "rate" almost always signifies a quantity divided by time. For example, velocity is the rate of change of position, and freezing rate is the rate of change of temperature during freezing.

Answer 1

The Correct Option is B

Step 1: Analyze the definition provided in the question. It describes a quantity calculated as:
\[ \frac{(\text{Initial Temperature} - \text{Final Temperature})}{\text{Freezing Time}} \] This represents the change in temperature ($\Delta T$) divided by the time taken for that change ($\Delta t$).

Step 2: Relate this to physical concepts. A change in a quantity divided by time is defined as a "rate". Since the quantity changing is temperature and the process is freezing, this expression defines the Freezing Rate.

Step 3: Evaluate the other options. "Freezing Time" is the denominator of the expression, not the expression itself. "Thawing Time" and "Thawing Rate" refer to the opposite process of melting, not freezing. Therefore, "Freezing Rate" is the correct term.