Q.

A faulty thermometer has fixed points marked 5 & 95. What is the correct temperature in centigrade when this thermometer reads  590

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a

600C

b

500C

c

300C

d

100C

answer is A.

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Detailed Solution

relation between centigrade thermometer and faulty thermometer is C100=X−LFPUFP−LFP here LFP is lower fixed point=5; UFP is upper fixed point=95; X is reading on faulty thermometer=59 substitute given values in above equation C100=59−595−5 ⇒C100=5490 ⇒C=600C
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