Search SchoolNGR

Sunday, 14 June 2026
Register . Login

Physics Past Questions and Answers

Waec Physics Questions

Question 796:
A resistance thermometer has a resistance of 20\(\Omega\) at 0oC and 85\(\Omega\) at 100oC. If its resistance is 52\(\Omega\)in a medium, calculate the corresponding temperature
  • A 49.2oC
  • B 60.6oC
  • C 80.0oC
  • D 84.7oC
View Answer & Explanation
Question 797:
A given mass of an ideal gas has a pressure of 500Nm-2 at -13oC. If its volume remains constant. Calculate its pressure at 247oC.
  • A 25Nm-2
  • B 50Nm-2
  • C 500Nm-2
  • D 1000Nm-2
View Answer & Explanation
Question 798:
The volume of an ideal gas at a pressure of 77cmHg and temperature 60oC is 24cm3. If the temperature and pressure are increased to 98oC
and 81cmhg respectively, calculate the new volume of the gas
  • A 411.5cm3
  • B 267.1cm3
  • C 254.2cm3
  • D 112.7cm3
View Answer & Explanation
Question 799:
The amount of heat given out or absorbed when a substance changes its state at a constant temperature is known as
  • A Latent heat
  • B Heat capacity
  • C Specific latent heat
  • D Specific heat capacity
View Answer & Explanation
Question 800:
Which of the following physical qualities affects the saturated vapour pressure of a liquid ?
  • A Temperature
  • B Volume
  • C Mass
  • D Density
View Answer & Explanation