Question

A faulty thermometer has its fixed points marked at $6^{\circ }$and ${96}^{\circ }$. What is the correct temperature on the centigrade scale when this thermometer reads ${87}^{\circ }$ ?

• A. ${83}^{\circ }$
• B. ${93}^{\circ }$
• C. ${90}^{\circ }$
• D. ${85}^{\circ }$

Answer 1

The correct option is C ${90}^{\circ }$

If a thermometer is wrong calibrated then,
If $X$ the temperature reading on the faulty thermometer scale then,

$t=\frac{(X-LFP}{(UFP-LFP)}\times 100$. Where, $t=$actual reading.

So, for a faulty reading of ${87}^{\circ }C$ the actual reading can be found by using above formula is $={90}^{\circ }C$