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Temperature and Thermometer

A thermometer...

Question

A thermometer is made up of glass and filled with mercury. Which property of glass and mercury helps us to clearly observe the temperature reading?

A

Transparency and lustre

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B

Transparency and softness

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C

Lustre and opacity

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D

Lustre and hardness

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Solution

The correct option is A Transparency and lustre
Mercury is a shiny liquid material so it has lustre. We can easily observe the level of mercury in the thermometer because the glass is transparent. Also, the lustrus nature of mercury makes it clearly visible.

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