Measuring Instruments and Errors

Choose suitable measuring tool to measure thickness of a book.

• Ammeter

• Thermometer

• Triple beam balance

• Vernier calipers

Choose the correct measuring tool to measure mass of iron cube.

• Ammeter

• Spring balance

• Triple beam balance

• Micrometer screw gauge

Choose the correct measuring tool to measure temperature of human body.

• Clinical thermometer

• Laboratory thermometer

• Voltmeter

• Electronic balance

Choose the correct measuring tool to measure electric current.

• Digital thermometer

• Electronic balance

• Digital ammeter

• Micrometer screw gauge

Choose TWO measuring instruments that can use to measure thickness of a beaker.

• Ruler

• Ammeter

• Thermometer

• Vernier calipers

• Micrometer screw gauge

Choose the correct smallest division value of micrometer screw gauge

• 1 mm

• 0.1 cm

• 0.01 mm

• 1 cm

Choose the correct smallest division value for laboratory thermometer.

• 1 ^o C

• 0.5 ^o C

• 0.1 ^o C

• 0.01 ^o C

Choose the correct smallest division value for digital ammeter.

• 0.1 A

• 0.5 A

• 0.01 A

• 1 A

Choose the correct TWO types of errors when taking measurement.

• Random error

• Systematic error

• Parallax error

• Zero error

Choose TWO examples of error caused by observer when taking measurement.

• Zero error

• Wrong techniques

• Parallax error

• Measuring instruments error