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What is the smallest change in the input signal that can be detected by an instrument called?
- a)Accuracy
- b)Precision
- c)Resolution
- d)Sensitivity
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
What is the smallest change in the input signal that can be detected b...
Accuracy: It is the degree of closeness with which the reading approaches the true value of the quantity to be measured.
Precision: It is the measure of reproducibility i.e., given a fixed value of a quantity, precision is a measure of the degree of agreement within a group of measurements.
- The precision of an instrument does not guarantee accuracy
- An instrument with more significant figures has more precision
- Deflection factor is reciprocal of sensitivity
Resolution: The smallest change in output to the change in input is known as resolution. Resolution is the smallest measurable input change.
Sensitivity: It is defined as the ratio of the changes in the output of an instrument to a change in the value of the quantity being measured. It denotes the smallest change in the measured variable to which the instrument responds.
Deflection factor or inverse sensitivity is the reciprocal of sensitivity.
Most Upvoted Answer
What is the smallest change in the input signal that can be detected b...
Resolution
The smallest change in the input signal that can be detected by an instrument is known as the resolution of the instrument. It represents the ability of the instrument to distinguish between small changes in the input signal.
Explanation
- Accuracy: Accuracy refers to how close the measurement is to the true value. It does not necessarily relate to the smallest change that can be detected by the instrument.
- Precision: Precision is the consistency of repeated measurements. It does not directly indicate the smallest change that can be detected.
- Resolution: Resolution is specifically related to the smallest change that can be detected by the instrument. It is determined by the smallest increment of input signal that the instrument can detect.
Instruments with higher resolution can detect smaller changes in the input signal, providing more detailed and accurate measurements. It is an important factor to consider when selecting an instrument for specific measurement requirements. Instruments with higher resolution are often preferred in applications where small changes need to be detected and measured accurately.
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