NEET
- Exam
- NEET
- Subject
- Physics
- Chapter
- Mathematics in Physics
NEET · Physics · Mathematics in Physics
A student measures human body temperature by placing a thermometer...
A student measures human body temperature by placing a thermometer under the armpit. This method always gives a temperature reading that is lower than the actual internal body temperature. According to the classification of errors in measurement, this specific type of error is an example of:
Options
- AImperfection in experimental technique
- BRandom error
- CInstrumental error
- DPersonal error
Correct answer
A. Imperfection in experimental technique
Step-by-step solution
According to NCERT, measuring temperature under the armpit will always give a reading lower than the actual body temperature. This is a consistent error occurring in one direction due to a flawed procedure, which falls under the category of systematic errors, specifically termed as 'imperfection in experimental technique or procedure'.
It is not an instrumental error because the thermometer itself may be perfectly calibrated. It is not a personal error because it is not caused by individual carelessness or parallax. It is not a random error because the reading does not fluctuate unpredictably but is consistently lower.
Answer: Imperfection in experimental technique
It is not an instrumental error because the thermometer itself may be perfectly calibrated. It is not a personal error because it is not caused by individual carelessness or parallax. It is not a random error because the reading does not fluctuate unpredictably but is consistently lower.
Answer: Imperfection in experimental technique