Question

A faulty thermometer measures 28.2'c and upper and lower fixed point of thermometer is 98.4'c and -1.2'c what is exact temperature

Answer 1

The exact temperature is 28.31⁰C.

Given:

Upper fixed point= 98.4⁰C

Lower fixed point= -1.2⁰C

Faulty measure= 28.2⁰C

To find:

The exact temperature in the faulty thermometer.

Solution:

• Thermometer is a device which is used to measure the temperature of a substance.
• In a thermometer the upper fixed point is 100⁰C and lower fixed point 0⁰C and total number of divisions is 100.
• 100 divisions= 100⁰C

So, 1 division= 1⁰C

For the faulty thermometer the total number of divisions= upper fixed point- lower fixed point

Total number of divisions= 98.4-( -1.2)

So, the total number of divisions= 99.6

In a normal thermometer 100 divisions= 100⁰C

But, in this faulty thermometer 99.6 divisions= 100⁰C

So, 1 division= $\frac{100}{99.6}$

Since, 1⁰C= 1 division

So, 1⁰C=    $\frac{100}{99.6}$

For, 28.2⁰C= $\frac{100(28.2) }{99.6}$

So, 28.2⁰C= 28.31⁰C

Therefore, the exact temperature is 28.31⁰C.

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