Chapter 1, Problem 1STP

To determine

The correct option.

Answer to Problem 1STP

The option (C) is correct.

Explanation of Solution

Introduction:

The precision of the physical quantity depends on the number of the significant figures in the numerical value of the quantity.

The age of the wooden spear in the Lab A is $2250\pm 40\text{years}$ . The number of significant figure in the age of the wooden spear from the lab A is three.

The age of the wooden spear in the Lab B is $2215\pm 50\text{years}$ . The number of significant figure in the age of the wooden spear from the lab B is four.

As the number of significant figure in the sample of the wooden spear from the lab B is more, so the lab A’s reading is less precise than the lab B’s reading.

Conclusion:

The lab A’s reading is less precise than the lab B’s reading. Thus, the option (C) is correct.