Question

the length of table is measured by two student are 90.5cm and 90.4 cm respectively, the error involved in measurement is called​

Answer 1

distance

Answer 2

Find the error in the measurement of the length of the table.

Explanation:

• Here let the error involved be considered a random error as its source is unknown.
• Since in case of random errors taking multiple readings and finding their average value gives a measurement of the true value.
• Hence, the true value of the length of table here is , $L=\frac{90.5+90.4}{2}\ \ \ \ \ \ ->L=90.45\ cm$  
• Hence, the error involved in the measurement is the difference between the true value and observed value.
• Here observed values are $90.5\ cm,\ 90.4\ cm$ hence the error involved is ,  
• $\Delta L=|90.45-90.5|=|90.45-90.4|\\\Delta L=\pm 0.5\ cm$   --->ANSWER