Write down the temperature of (i) lower fixed point, and (ii) upper fixed point, on the Fahrenheit scale.

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Solution

(i) Lower fixed point : On the Fahrenheit scale is the mark at which pure ice melts. It is $32^{0} F$ on Fahrenheit scale.
(ii) Upper fixed point : On the Fahrenheit scale is the mark at which water starts changing into steam at normal atmospheric pressure. It is $212^{0} F$ .

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Write down the temperature of (i) lower fixed point, and (ii) upper fixed point, on the Fahrenheit scale.

(i) Lower fixed point : On the Fahrenheit scale is the mark at which pure ice melts. It is 320F on Fahrenheit scale.(ii) Upper fixed point : On the Fahrenheit scale is the mark at which water starts changing into steam at normal atmospheric pressure. It is 2120F.

(i) Lower fixed point : On the Fahrenheit scale is the mark at which pure ice melts. It is $32^{0} F$ on Fahrenheit scale.
(ii) Upper fixed point : On the Fahrenheit scale is the mark at which water starts changing into steam at normal atmospheric pressure. It is $212^{0} F$ .