Physics Chapter 1

How many significant figures does 50.00300 have?

• five

• seven

• two

• three

The accepted value for free-fall acceleration is 9.80665 m/s². Which of the following measurements is the most accurate?

• 9.80860 m/s²

• 9.90665 m/s²

• 8.80677 m/s²

• 9.00665 m/s²

Convert 154,982 mm to m

• 154.982 m

• 0.154982 m

• 15,498.2 m

• 1,549.82 m

How many no. of significant figures are there in 0.000450

• 7

• 2

• 3

• 6

An accurate measurement is one which has less

• Precision

• Absolute uncertainty

• percentage uncertainty

• None of these

In Scientific notation, the number 16541290 is expressed as

• $0.165\ \times\ 10^8$

• $0.165\ \times10^{-8}$

• $1.654\ \times10^7$

• $1.654\times10^{-7}$

A student added three figures 72.1, 3.21 and 1.003, The correct answer regarding the rules of significant figure is

• 76.423

• 76.42

• 76.4

• 76

How many years in one second ?

• $3.1\ \times10^{-6\ }$ years

• $3.1\ \times10^{-7}$ years

• $3.1\times10^{-8}$ years

• $3.1\times10^{-9}$ years

The degree to which repeated measurements agree with each other is called

• approximation

• accuracy

• precision

• derived

There are ___ millimeters (mm) in 2.7 centimeters (cm)

• 270 mm

• 0.27 mm

• 27 mm

• .027 mm