1 Physical Quantities 2020 JnN

The diagram shows a pendulum.

The pendulum bob swings repeatedly between points M and N.

A student starts a stop-watch when the bob reaches point M.

He counts each time the bob changes direction and stops the watch on the tenth change in direction.

The watch shows a time of 12.0 seconds.

What is the period of the pendulum?

• 0.60 s

• 1.2 s

• 2.4 s

• 12.0 s

A student measures the volumes of three liquids using three different measuring cylinders.

The table shows the volumes recorded by the student.

measuring cylinder volume/cm³

^{1 1.2}

^{2 2.2}

^{3 25}

Which readings are correctly recorded?

• 1, 2 and 3

• 1 and 2 only

• 1 and 3 only

• 1 only

A student uses a metre rule to measure the length of a sheet of paper. Which measurement is shown to the nearest millimetre?

• 0.3 m

• 0.29 m

• 0.293 m

• 0.2932 m

For which one of the following measurements would a micrometer screw gauge be most suitable?

• length of this page

• length of a pencil

• diameter of a wire

• diameter of an atom

The diagram shows a measuring device. For which measurement is this device suitable?

• diameter of a cylinder of aluminium of about 20 cm

• distance between two molecules of zinc

• length of a rod of iron of about 1 m

• thickness of a sheet of copper of about 1.5 mm

A micrometer screw gauge reads 0.02 mm when the jaws are fully closed. It reads 0.56 mm when measuring the diameter of a metal wire. What is the diameter of the wire?

• 0.36 mm

• 0.54 mm

• 0.56 mm

• 0.58 mm

The diagram shows a rectangular metal sheet close to two rulers. What is the area of the metal sheet?

• 700 cm²

• 875 cm²

• 900 cm²

• 1125 cm²

A pendulum makes 50 complete swings in 2 min 40 s. What is the time period for 1 complete swing?

• 1.6 s

• 3.2 s

• 4.8 s

• 6.4 s

Five athletes P, Q, R, S and T compete in a race.

The table shows the finishing times for the athletes.

Which statement is correct?

• Athlete P won the race and was 0.70 s ahead of the athlete in second place.

• Athlete P won the race and was 1.90 s ahead of the athlete in second place.

• Athlete S won the race and was 1.30 s ahead of the athlete in second place.

• Athlete S won the race and was 2.10 s ahead of the athlete in second place.

Diagram 1 shows a solid, rectangular-sided block.

Diagram 2 shows the same block from the front and from the side.

Metre rules have been shown close to the edges of the block. What is the volume of the block?

• 120 cm³

• 168 cm³

• 264 cm³

• 1155 cm³