Q.

The steam point and the ice point of a mercury thermometer are marked as  800 and  200. What will be the temperature in centigrade mercury scale when this thermometer reads 320

Moderate

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By Expert Faculty of Sri Chaitanya

a

200C

b

300C

c

100C

d

00C

answer is 1.

(Detailed Solution Below)

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Detailed Solution

relation between centigrade thermometer and unknown thermometer is C100=X−LFPUFP−LFP C is reading on centigrade thermometer;X  is reading on unknwn thermometer=32 LFP is lower fixed point=20;UFP is upper fixed point=80 substitute given values in above relation ⇒C100=32−2080−20 ⇒C100=1260 ⇒C=1206=200C
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