EduNinja

[Maximum number: 1]

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

A

length of this page

B

length of a pencil

C

diameter of a wire

D

diameter of an atom

[Maximum number: 1]

The diagram shows a liquid-in-glass thermometer with a uniform capillary tube.

Which temperature is indicated by the thermometer?

A

$73^{\circ} \mathrm{C}$

B

$80^{\circ} \mathrm{C}$

C

$82^{\circ} \mathrm{C}$

D

$90^{\circ} \mathrm{C}$

[Maximum number: 1]

A student measures the diameter of a pencil.
Which measuring instrument will give the most precise reading?

A

a measuring tape

B

a metre rule

C

a micrometer screw gauge

D

a ruler

CAIE IGCSE Physics 7.2 Experimental Skills and Investigations Topic Practice