घंटे की सुई (1:20) से (6:50) तक कितने रेडियन घूमती है?
Through how many radians does the hour hand turn from (1:20) to (6:50)?
Explanation opens after your attempt
Correct Answer
B. \(\frac{11\pi}{12}\)
Concept
The time difference is \(\frac{11}{2}\) hours and the hour hand turns \(30^\circ\) per hour. The total angle is \(165^\circ=\frac{11\pi}{12}\).
Why this answer is correct
The correct answer is B. \(\frac{11\pi}{12}\). The time difference is \(\frac{11}{2}\) hours and the hour hand turns \(30^\circ\) per hour. The total angle is \(165^\circ=\frac{11\pi}{12}\).
Exam Tip
समय अंतर \(\frac{11}{2}\) घंटे है और घंटे की सुई \(30^\circ\) प्रति घंटा घूमती है। कुल कोण \(165^\circ=\frac{11\pi}{12}\) है।
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