Measurement made in science lab must be as accurate as possible. Ravi

1.	Measurement made in science lab must be as accurate as possible. Ravi measured the length of an iron rod and said it was 19.34 cm long; Kamal said 19.25 cm; and Tabish said 19.27 cm. The correct length was 19.33 cm. How much of error was made by each of the boys?
Answer» The correct length of the iron rod = 19.33 cm The length of the rod measured by Ravi = 19.34 cm ∴ Error made by Ravi = (19.34 – 19.33)cm = +0.01 cm The length of the rod measured by Kamal = 19.25 cm ∴ Error made by Kamal = (19.25 – 19.33) cm = -0.08 cm The length of the rod measured by Tabish = 19.27 cm ∴ Error made by Tabish = (19.27 – 19.33) cm = -0.06 cm.

Measurement made in science lab must be as accurate as possible. Ravi measured the length of an iron rod and said it was 19.34 cm long; Kamal said 19.25 cm; and Tabish said 19.27 cm. The correct length was 19.33 cm. How much of error was made by each of the boys?

Answer»

The correct length of the iron rod = 19.33 cm

The length of the rod measured by Ravi = 19.34 cm

∴ Error made by Ravi = (19.34 – 19.33)cm = +0.01 cm

The length of the rod measured by Kamal = 19.25 cm

∴ Error made by Kamal = (19.25 – 19.33) cm = -0.08 cm

The length of the rod measured by Tabish = 19.27 cm

∴ Error made by Tabish = (19.27 – 19.33) cm = -0.06 cm.