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5/12 MCQs for:

Experimental physics

This gauge is most probably used to measure:

Speed.

Current.

Amplitude.

Voltage.

What is the percent uncertainty in the measurement 2.58 ± 0.15 cm?

5.8%.

8.7%.

12%.

2.9%.

Is a temperature of 30o C warm or cold to man?

Cold.

Warm.

Which is colder -0 °C or -100 °C?

-0 °C.

-100 °C.

None.

Vernier calipers, reading to 0.1 mm, are used to find the internal diameter (10.0 ± 0.1 mm) and the external diameter (12.0 ± 0.1 mm) of a length of glass tubing. The mean wall thickness would be quoted, therefore, as

2.0 ± 0.0 mm.

2.0 ± 0.1 mm.

1.0 ± 0.1 mm.

1.0 ± 0.2 mm.