In summer, the clocks

Options

A. become slow
B. become fast
C. gives correct time
D. lose time

Answer

**Step-by-Step Solution:**

1. **Understanding the Pendulum**: A pendulum clock measures time based on the oscillation of a pendulum. The time period (T) of a pendulum is given by the formula:
\[ T = 2\pi \sqrt{\frac{L}{g}} \]
where \( L \) is the length of the pendulum and \( g \) is the acceleration due to gravity.

2. **Effect of Temperature on Length**: In summer, temperatures are higher. Most materials expand when heated, which means the length \( L \) of the pendulum will increase due to thermal expansion.

3. **Impact on Time Period**: Since the length \( L \) increases, we can analyze how this affects the time period \( T \). As \( L \) increases, the time period \( T \) also increases because they are directly proportional in the formula.

4. **Conclusion on Clock Behavior**: An increase in the time period means that the pendulum takes longer to complete one full oscillation. Therefore, the clock will run slower because it takes more time to register each tick.

5. **Final Statement**: Thus, in summer, due to the increase in temperature and the consequent increase in the length of the pendulum, the clocks become slow.

**Final Answer**: In summer, the clocks become slow.

---