In a thermometer, there are 100 major divisions between the freezing point and the boiling point of water. If each major division has 5 minor divisions, what is the minimum reading that can be taken using the thermometer?
A
0.2∘C
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B
1∘C
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C
0.8∘C
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D
1.2∘C
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Solution
The correct option is A0.2∘C We know that the freezing and the boiling points of water are 0∘C and 100∘C respectively. Since, there are 100 major divisions between these values, each major division represents one degree change in temperature. Also, each major division is further divided to 5 minor divisions. Hence, the minimum reading that can be taken is 100100×5=0.2∘C