Batch 2026 - 1Q - Physics 1 - Refresher 2

Which of the following is the SI unit for length?

• Feet (ft)

• Inch (in)

• Kilometer (km)

• Meter (m)

Which of the following are considered basic quantities of measurement?

• Density, Force, Temperature

• Length, Mass, Time

• Mass, Length, Volume

• Time, Electric Current, Area

The following are derived units of measurement, except _______.

• kg

• m/s

• m³

• N

The prefix 'milli' represents ________.

• 1/10

• 1/100

• 1/1000

• 1/10000

The SI unit consists of _______ fundamental units.

• three

• two

• seven

• six

The base quantity among the following is

• electric charge

• amount of substance

• area

• volume

What is precision in the context of measurements?

• The ability of a measurement to reflect the true value

• The consistency and repeatability of measurements

• The closeness of measurements to the actual value

• The degree of error in a measurement

What is accuracy in the context of measurements?

• The ability of a measurement to reflect the true value

• The consistency and repeatability of measurements

• The closeness of measurements to the actual value

• The degree of error in a measurement

If you repeatedly measure the length of an object and your measurements are very close to each other but consistently greater than the actual length, what can you say about the measurements?

• They are precise and accurate.

• They are precise but not accurate.

• They are accurate but not precise.

• They are neither precise nor accurate.

What is the term for the difference between a measured value and the true or accepted value?

• Precision

• Accuracy

• Error

• Uncertainty