Errors in physics experiments and measurement and their solutions?

a)Errors

 The difference between standard and experimental values is error.

There are two types of errors:-

i)Systematic error

ii)Random error

i)Systematic error :-

• ·         Also known as assignable error

• ·         Usually follow same trend of variations

Causes:-

• ·         Zero error in measuring instrument

• ·         Poor calibration of instrument

• ·         Incorrect calibration on the measuring instrument

EXAMPLE:-

Error occurring due to L.C of the measuring instrument

SOLUTION TO SOLVE ERROR:-

• ·         By comparing the instrument with other instrument which is more accurate

• ·         By carefully monitoring the measurement process

ii)Random error:-

• ·         Also known as Un Assignable error

• ·         Do not follow the same trend of variation

Causes:-

• ·         Due to some unknown reasons

• ·         Deviation in results

EXAMPLE:-

During measurement ,there are different  values of result of same measuring quntity.

SOLUTION TO SOLVE ERROR:-

• ·         Cannot be controlled experimentally.

• ·         By taking several reading of same measuring quantity  and then taking their mean value.