Question

A clock is started at noon. By 10 min past 5, the hour hand has turned through

• A. ${145}^o$
• B. ${150}^o$
• C. ${155}^o$
• D. ${160}^o$

Answer 1

The correct option is C ${155}^o$

Angle traced by hour hand in 12 h = ${360}^o$

Angle traced by hour hand in 5 h 10 min i.e., $\frac{31}{6}h$ $⟹(\frac{360}{12}\times \frac{31}{6}{)}^o$ = ${155}^o$