Laboratory thermometers A and B have melting points of ice marked at 5° C and 15° C, and boiling points of water at 105° C and 115° C, respectively. When thermometer A measures the temperature of hot water as 70° C, then for the same hot water, what will be the temperature shown by thermometer B?
Laboratory thermometers A and B have melting points of ice marked at 5° C and 15° C, and boiling points of water at 105° C and 115° C, respectively. When thermometer A measures the temperature of hot water as 70° C, then for the same hot water, what will be the temperature shown by thermometer B?
The correct option is B 800C
Laboratory thermometer readings were defined based on the freezing point and boiling point of water. These points fix two extreme points in the thermometer readings. The freezing point of water is associated with the 0° C and the boiling point of water is associated with the 100° C.
Here, both extreme points get disturbed and displaced in both the thermometers.
Thermometer A shows a reading of 70° C, that means mercury gets expanded from 5° C to 70° C. Therefore, the range of the expansion is 65° C. The range of the expansion will be the same for both thermometers, as both are measuring the same substance(Hot water).
From this, we can calculate the reading shown by thermometer B by simply adding the range to the lower limits of temperature. I.e 15° C + 65° C = 80° C.
Hence, the temperature shown by the thermometer B is 80° C.
Laboratory thermometer readings were defined based on the freezing point and boiling point of water. These points fix two extreme points in the thermometer readings. The freezing point of water is associated with the 0° C and the boiling point of water is associated with the 100° C.
Here, both extreme points get disturbed and displaced in both the thermometers.
Thermometer A shows a reading of 70° C, that means mercury gets expanded from 5° C to 70° C. Therefore, the range of the expansion is 65° C. The range of the expansion will be the same for both thermometers, as both are measuring the same substance(Hot water).
From this, we can calculate the reading shown by thermometer B by simply adding the range to the lower limits of temperature. I.e 15° C + 65° C = 80° C.
Hence, the temperature shown by the thermometer B is 80° C.
