Question

discribe various precautions that need to be taken while taking measurements

Answer 1

Some precautions must be taken while using a metre scale to measure the length of an object : -

1. Our eye should be vertically abvove the point, where the measurement is to be taken.

2. For proper measurement, Keep the ruler exactly along the length , for the measurement.

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Answer 2

precautions are as follows
1. look carefully the readings
2. check out the conditions which can effect reading.
3.concentration should be max while taking reading.
4.parallex error should be avoided
5.Dont look at readings slantly.
6. Hey in reading behind the reading needle there is a mirror be sure that needle should perfectly overlap its image.