Questions
Why is mercury used in thermometers?
a
It volume is proportional to square of increase of temperature
b
It shows linear variation in volume with temperature
c
Its volume remains constant with temperature
d
Its volume decreases with increase in temperature
detailed solution
Correct option is B
For measuring temperature in a thermometer we need a substance whose physical properties change with temperature and can be easily related with temperature. Mercury’s volume increases linearly with increase in temperature and hence we can create a scale on the thermometer accordingly.Talk to our academic expert!
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If two temperatures differ by 25 degrees on celsius scale, the difference of temperature on Fahrenheit scale is
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