Question

Match List - I with List - II.

List - I	List - II
A. Resolution B. Sensitivity C. Accuracy D. Precision	I. Closeness with which the instrument reading approaches the true value II. Reproducibility of measurement III. Smallest change in measured value which instrument can respond IV. Ratio of response of the instrument to the input value

• A. A-III, B-IV, C-I, D-II
• B. A-III, B-IV, C-II, D-I
• C. A-IV, B-III, C-I, D-II
• D. A-II, B-III, C-I, D-IV

Hint:

Important instrument definitions:
• Resolution \(\rightarrow\) Smallest detectable change
• Sensitivity \(\rightarrow\) Output/Input ratio
• Accuracy \(\rightarrow\) Closeness to true value
• Precision \(\rightarrow\) Repeatability

Answer 1

The Correct Option is A

Concept: Measurement systems and instruments are characterized by several important performance terms:
• Resolution,
• Sensitivity,
• Accuracy,
• Precision. Each term has a very specific meaning and must not be confused with others.

Step 1: Matching Resolution. Resolution means the minimum measurable change detectable by an instrument. Therefore: \[ \text{Resolution} \rightarrow \text{Smallest detectable change} \] Thus: \[ A \rightarrow III \]

Step 2: Matching Sensitivity. Sensitivity is defined as: \[ \frac{\text{Output response}}{\text{Input change}} \] Hence: \[ \text{Sensitivity} \rightarrow \text{Ratio of response to input} \] Therefore: \[ B \rightarrow IV \]

Step 3: Matching Accuracy. Accuracy refers to closeness of measurement to the true value. Thus: \[ C \rightarrow I \]

Step 4: Matching Precision. Precision refers to repeatability or reproducibility of measurements. Hence: \[ D \rightarrow II \]

Step 5: Writing the complete matching. Therefore: \[ A-III,\quad B-IV,\quad C-I,\quad D-II \] Hence the correct option is: \[ \boxed{(1)} \]