Question

The error occurs due to
1 point
(a) Imperfection of observer
(b) Improper instrument
(c) both a &b
(d) none of the above​

Answer 1

Answer:

(d) none of the above

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ANSWERED BY -@SOWAIBA

Answer 2

Error occurs due to (c) both a & b.

Explanation:

• Errors in measurement are a common phenomena. The result of any measurement done with the help of any measuring instrument contains some uncertainty. This uncertainty is called error.

• An error may be defined as the difference between the measured value and the actual value.

• The true value is impossible to find by experimental means. It may be defined as the average value of an infinite number of measured values.

• The measured value is a single measuring of the object with the aim of being as accurate as possible.

Types of error

Gross error

• This category basically takes into account human oversight and other mistakes while reading, recording, and readings.

• The most common errors, the human error in the measurement fall under this category of errors in measurement.

Random errors

• The random errors are those errors, which occur irregularly and hence are random.

• These can arise due to random and unpredictable fluctuations in experimental conditions.

Systematic errors

This includes:

1. Environmental Errors: This type of error arises in the measurement due to the effect of the external conditions on the measurement.
2. Observational Errors: These are the errors that arise due to an individual’s bias, lack of proper setting of the apparatus, or an individual’s carelessness in taking observations.
3. Instrumental Errors: These errors arise due to faulty construction and calibration of the measuring instruments.