Error in measurement

If X = ( 20 ± 0.2 ) and

Y = ( 5 ± 0.1 ) , so the relative error of X+Y is ………

• 0.012

• 0.3

• 0.03

if the length of a pen is 10.2 cm while the measured value is 10 cm

So the absolute error and the relative error are ……

• 0.2 & 0.02

• 0.1 & 0.02

• 0.2 & 1.2

If X= (10 ± 0.1 ) and

Y =( 4 ± 0.8) so 2x +Y is....

• ( 14 ± 0.9)

• ( 24 ± 1 )

• ( 40 ± 1 )

If the actual value of length of a pen is 14 cm, and there was an error of 0.2.

What are the probabilities of the measured value?

• 13.8 & 14.2 cm

• 2.8 & 13.8 cm

• 12.8 & 14.2 cm

If X= (10 ± 0.1 )

So the absolute error and the relative error are.....

• 0.1 & 10

• 0.1 & 0.01

• 0.01 & 0.1

If the length of the building is (10 ± 0.1 ) m,

the width of it is ( 20 ± 0. 1) m and the height is ( 30 ± 0. 3) so which measurement is more accurate...

• Length

• Width

• Height