जब घड़ी 4:25 घंटे दर्शाती है, तब मिनट की सुई और घंटे की सुई के बीच का कोण कितना है?
Read this question in English
What is the angle between the minute hand and hour hand when the clock shows 4:25 hours?
(a) 12.5° · (b) 15° · (c) 17.5° · (d) 20°
उत्तर और व्याख्या · explanation in English
Answer: (c) 17·5°
At 4:25 the minute hand is at 25 × 6° = 150° from 12, and the hour hand at 4 × 30° + 25 × 0.5° = 132.5°. The angle between them is 17.5°.
- Minute hand moves 6° per minute: 25 × 6 = 150° from the 12.
- Hour hand moves 30° per hour plus 0.5° per minute: 4 × 30 + 25 × 0.5 = 132.5°.
- Angle = 150 − 132.5 = 17.5°.
- Check with the formula |30H − 5.5M| = |120 − 137.5| = 17.5°.
Remember · Angle between the hands = |30H − 5.5M|; if the result is more than 180°, subtract it from 360°.
Question and answer: UPSC's official GS Paper II (2024, Series A) — paper ↗ · answer key ↗. Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). ·