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Physics Past Questions and Answers

Topic: Temperature and Its Measurement

Jamb Physics Questions - Temperature and Its Measurement

Question 21:
Heat transfer by convection in a liquid is due to the
  • A Latent heat of vaporization of the liquid
  • B Increased vibration of the molecules of the liquid about theit mean position
  • C Variation of density of the liquid
  • D Expansion of the liquid as it is heated
View Answer & Explanation
Question 22:
Convert 45°C to kelvin
  • A 318K
  • B 250K
  • C 184K
  • D 120K
View Answer & Explanation
Question 23:
A platinum resistance thermometer wire has a resistance of 70hms at 0°Cand 7.5 Ohms at 100°C. Calculate the temperature of the wire when the resistance is 7.2 Ohms
  • A 15°C
  • B 40°C
  • C 20°C
  • D 10°C
View Answer & Explanation
Question 24:
Heat transfer by convection will take place is one the following substance.
  • A Stone
  • B Wood
  • C Mercury
  • D Water
View Answer & Explanation
Question 25:
A thermocouple thermometer is connected to a millivoltmeter which can read up to 10mV. When one junction is in ice at 0°C and the other is steam at 100°C, the millivoltmeter reads 4mV. What is the maximum temperature which this arrangement can measure
  • A 100\(^o\)C
  • B 248\(^o\)C
  • C 250\(^o\)C
  • D 350\(^o\)C
View Answer & Explanation