Question

Which of the following does not express a time interval?

• A. A day
• B. A second
• C. A school period
• D. Time of the first bell in the school

Answer 1

The correct option is D

Time of the first bell in the school

The explanation for correct option:

1. The term "time interval" refers to the difference between two points in time.
2. The first bell in the school defines a specific moment in time. It is not a distinction between two points in time.
3. As a result, it is not a 'time interval.' A time interval is the amount of time that elapses between two points in time.

Hence, option (D) is correct.

The explanation for incorrect option:

1. Other quantities, such as a second, a day, and a school period, can be divided into a number of shorter time periods.
2. A time interval must contain at least two-time values.

Hence, options (A),(B),and (C) are incorrect.