जॉइन Examsbookउत्तर : 4. "215 degrees"
A clock is started at 11 a.m. By 600 seconds past 6 p.m, the hour hand has turned through ?5
प्र: A clock is started at 11 a.m. By 600 seconds past 6 p.m, the hour hand has turned through ?
- 1155 degreesfalse
- 2175 degreesfalse
- 3205 degreesfalse
- 4215 degreestrue
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उत्तर : 4. "215 degrees"
व्याख्या :
Answer: D) 215 degrees Explanation: The total angle traced by the hour hand is the angle traced in 7 hours and 10 minutes.We know that the angle traced by the hour hand in one hour is 30º and in one minute is 1/2º.Therefore, (30º x 7) + (10 x 1/2º) = 215º is the angle traced by the hour hand.