Q.

If a thermometer reads freezing point of water as  20∘c and boiling point is  150∘c how much thermometer read, when the actual temperature is  60∘c

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a

98∘c

b

110∘c

c

40∘c

d

60∘c

answer is 1.

(Detailed Solution Below)

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Detailed Solution

unknown thermometer , Lower Fixed point(LFP) = 200C; Upper Fixed Point (UFP)=1500C; actual reading given = 600C  the formula that relates unknown thermometer and celsius thermometer is, Z-LFPUFP-LFP=C-LFPUFP-LFP celsius thermometer has LFP=00C and UFP=1000C  substitute given values in above equation, x is reading on unknown thermometer  x-20150-20=60-0100-0  x-20=78  x=98∘c
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