In an experiment if the measured values of a physical quantity have a high degree of closeness to the true value . These measurements are said to be

Options

A. both precise and accurate
B. precise
C. accurate
D. niether accurate not precise

Answer

To solve the question, we need to understand the concept of accuracy in measurements. Here’s a step-by-step breakdown:

### Step 1: Understand the Question
The question asks about the nature of measurements that are close to the true value of a physical quantity.

**Hint:** Think about the terms used in measurement science, particularly those that describe how close a measurement is to the actual value.

### Step 2: Define True Value
The true value is the actual value of the quantity being measured. For example, if the true value is 3.687, this is what we are trying to measure accurately.

**Hint:** Consider what it means for a measurement to be "true" and how it relates to the measurements we obtain.

### Step 3: Consider Measured Values
When we perform measurements, we may get values that are either close to or far from the true value. For instance, if we measure a value of 3.7, we need to assess how close this is to the true value of 3.687.

**Hint:** Reflect on the implications of a measurement being close to the true value.

### Step 4: Define Accuracy
Accuracy refers to how close a measured value is to the true value. If the measured value is very close to the true value, we say that the measurement is accurate.

**Hint:** Recall the definitions of accuracy and precision, and focus on the aspect of closeness to the true value.

### Step 5: Conclusion
Based on the understanding of accuracy, we can conclude that the measurements that have a high degree of closeness to the true value are said to be "accurate."

**Final Answer:** The measurements are said to be **accurate**.