R

Ram Sharma • 193.88K Points
Coach

Q. Normal mercury thermometer can be used to measure a temperature of about 300°C. However, its maximum temperature measurement range can be increased upto about 500°C by 

(A) Filling nitrogen under pressure in the stem
(B) Increasing the diameter of the tube
(C) Using steel tube in place of glass tube
(D) Accounting for the tube expansion
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