Question Detail

PHY 101 Physical Quantities, Units, and Dimensions Objective Question

Question

The number 0.00580 expressed in scientific notation with the correct number of significant figures is
Options
A 5.8 × 10⁻³
B 5.80 × 10⁻³
Correct Answer
C 5.80 × 10³
D 5.8 × 10³
Correct Answer

Option B is the correct answer.

Detailed Explanation

0.00580 has three significant figures (the trailing zero after the 8 counts because the number has a decimal point). In scientific notation, the number should be written as 5.80 × 10⁻³. The decimal is moved three places to the right, so the exponent is -3.

Hint

Count the significant figures in the original number and ensure they are preserved when converting to scientific notation.

Question Info