Shivam placed his wall clock on a table so that at 9:00 a.m. the hour hand…
2023
Shivam placed his wall clock on a table so that at 9:00 a.m. the hour hand pointed South. In which direction will the minute hand point at 9:30 p.m.?
Answer: D. East — Concept: A rigid rotation of a clock face moves every hour mark and both hands through the same angle; the relative positions on the dial do not change. To…
- A.
South
- B.
North
- C.
West
- D.
East
Attempted by 22 students.
Show answer & explanation
Correct answer: D
Concept: A rigid rotation of a clock face moves every hour mark and both hands through the same angle; the relative positions on the dial do not change.
To find a direction, first infer the clock’s rotation from one known mark, then apply that same rotation to the required mark.
Application
On an upright clock, the 9 o’clock mark points West.
Here that mark points South, so the clock face has been rotated 90° anticlockwise: West → South.
At 9:30, the minute hand is on the 6 o’clock mark, which normally points South.
Applying the same 90° anticlockwise rotation gives South → East.
Cross-check: Place the 9 mark at the bottom (South); the 6 mark then lies on the right (East). This physical layout confirms the transformation.
Result: Therefore, the minute hand points East at 9:30 p.m.