Question

At which of the following times is the angle between the hour and minute hands of a clock exactly a straight angle?

• A. 03:00
• B. 06:00
• C. 09:00
• D. 12:30

Answer 1

The correct option is B 06:00


The only time when the angle between the hour and the minute hands of a clock is exactly a straight angle (from the given options) is 06:00 as shown in the above figure.

At 03:00 and 09:00, the angles made are right angles.

At 12:30, the angle made is obtuse.