Quartz crystal clocks have an accuracy of 1 sec in every

Options

A. `10^(-9)s`
B. `10^9s`
C. `10^(-13)s`
D. `10^(13)s`

Answer

To determine the accuracy of quartz crystal clocks, we need to understand the relationship between the time elapsed and the error in timekeeping.

### Step-by-Step Solution:

1. **Understanding the Accuracy**: The question states that quartz crystal clocks have an accuracy of 1 second. This means that over a certain period, the clock may gain or lose up to 1 second.

2. **Defining the Time Period**: We need to find out how long it takes for the clock to gain or lose this 1 second. The accuracy is often expressed in terms of a large number of seconds.

3. **Calculating the Time Period**: It is known that quartz crystal clocks can maintain their accuracy over a very long time. For many quartz clocks, this accuracy is around 1 second for every 1 billion seconds (10^9 seconds).

4. **Expressing the Result**: Therefore, we can say that quartz crystal clocks have an accuracy of 1 second in every 10^9 seconds. This means that if you were to run the clock for 1 billion seconds, it could potentially be off by 1 second.

5. **Conclusion**: The final answer is that quartz crystal clocks have an accuracy of 1 second in every 10^9 seconds.

### Final Answer:
Quartz crystal clocks have an accuracy of 1 second in every \( 10^9 \) seconds.

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