Quez 2 on Lec 2

The diameter of a copper wire is thought to be approximately 0.3 mm.

Which instrument should be used to obtain a more accurate measurement of the diameter of the

wire?

• measuring tape

• metre rule

• micrometer

• ruler

Which is a unit of acceleration?

• g / cm³

• m / s

• m / s²

• N / m

The diagram shows an enlarged drawing of the end of a metre rule. It is being used to measure

the length of a small feather.

What is the length of the feather?

• 19 mm

• 29 mm

• 19 cm

• 29 cm

The diagram shows the height of a stack of identical coins.

What is the thickness of one coin?

• 0.20 mm

• 2.0 mm

• 0.24 cm

• 2.0 cm

What is the most accurate and precise method to measure the thickness of a coin?

• Use a micrometer screw gauge.

• Use a ruler and look at the scale perpendicularly.

• Use a top pan balance.

• Use the displacement method with water in a measuring cylinder.

A student investigates the rate of flow of oil through a funnel.

The diagrams show the experiment and the volume of oil in the measuring cylinder at the start of

the experiment, and one minute later.

What is the rate of flow of oil through the funnel during the one minute?

• 0.73 cm³/ s

• 0.80 cm³/ s

• 44 cm³/ s

• 48 cm³/ s

A measuring cylinder contains some water. A small metal block is slowly lowered into the water

and is then removed.

Finally a piece of plastic is attached to the metal block and the block is again slowly lowered into

the water.

The diagrams show the measuring cylinder at each stage of this process.

What is the volume of the piece of plastic?

• 10 cm³

• 25 cm³

• 70 cm³

• 80 cm³

Which row shows the best choice of measuring instruments to obtain accurate values for the

distances shown?

• A

• B

• C

• D