The angle between hour and minute hands at 11 O'clock will be :

Correct option is C

Step 1: Formula for the Angle Between Hour and Minute Hands

The formula for the angle between the hour and minute hands is:
Angle = | (30 × H - 5.5 × M) |
where:
- H = Hour
- M = Minutes

Step 2: Substituting the Values

At 11:00, H = 11 and M = 0. Substituting into the formula:
Angle = | (30 × 11 - 5.5 × 0) |
Angle = | (330 - 0) |
Angle = 330°

Step 3: Adjust for Acute Angle

The clock face is circular, and the largest angle possible is 360°. The smaller angle between the hands is:
Acute Angle = 360° - 330° = 30°

Final Answer

The angle between the hour and minute hands at 11 O'clock is 30°