Physics Past Questions and Answers

A given mass of an ideal gas has a pressure of 500Nm^-2 at -13^oC. If its volume remains constant. Calculate its pressure at 247^oC.

A 25Nm^-2
B 50Nm^-2
C 500Nm^-2
D 1000Nm^-2

Question 2992:

The volume of an ideal gas at a pressure of 77cmHg and temperature 60^oC is 24cm³. If the temperature and pressure are increased to 98^oC
and 81cmhg respectively, calculate the new volume of the gas

A 411.5cm³
B 267.1cm³
C 254.2cm³
D 112.7cm³

Question 2993:

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

Question 2994:

Which of the following physical qualities affects the saturated vapour pressure of a liquid ?

A Temperature
B Volume
C Mass
D Density

Question 2995:

Humidity is used to describe the amount of

A Air in water vapour
B Cloud available in the atmosphere
C Air in equal volume of cloud
D Water vapour in the amosphere