Measurement

• 0.03 cm

• 0.13 cm

• 0.53 cm

• 1.00 cm

What is the order of magnitude of the diameter of the Earth?

• 1 x 10³ m

• 1 x 10⁵ m

• 1 x 10⁷ m

• 1 x 10⁹ m

A pendulum has a period of 1.0 s. A stopwatch is started when the pendulum is vertical and is moving to the right, as shown.

Which diagram shows the position and the direction of the pendulum 2.5 s later?

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Which is a scalar quantity?

• displacement

• force

• speed

• velocity

Which pair consists of two vector quantities?

• acceleration and weight

• density and velocity

• energy and force

• pressure and work done

Which order shows units of energy in the correct order of increasing size?

• J -> kJ -> mJ -> nJ

• mJ -> nJ -> J -> kJ

• nJ -> mJ -> J -> kJ

• MJ -> J -> kJ -> GJ

The diagram shows the scales on a micrometer screw gauge and a vernier caliper. What are the readings of these respectively?

• 6.77 mm, 1.7 mm

• 6.77 mm, 2.7 mm

• 7.77 mm, 2.7 mm

• 7.77 mm, 2.7 mm

A pendulum takes 14.2 s to make 5 complete swings from X to Y and back to X again.

What is the time taken for the pendulum to make half an oscillation?

• 1.42 s

• 2.84 s

• 4.26 s

• 14.2 s

A sheet of paper is folded twice as shown in the diagram. The thickness of the folded paper is measured using a micrometer screw gauge which gives a reading as shown below.

What is the actual thickness of the sheet of paper?

• 0.02 mm

• 0.13 mm

• 0.26 mm

• 0.52 mm

A spring was loaded with a mass as shown. The loaded spring was then pulled by a vertical displacement of X cm as shown. What is the total distance covered by the mass after it moved for 2 oscillations?

• X

• 2X

• 4X

• 8X