Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
Which of the following statements are NOT correct?
boiling occurs when the saturated vapour pressure of the liquid involved equals the external pressure
both the boiling point and the saturated vapour pressure of a given liquid depends on the external pressure
the saturated vapour presssure rises with increase in temperature
the saturated vapour pressure is independent of the volume available for the vapour
it is possible to boil water at a lower temperature than 100oC at high altitude
Correct answer is D
The saturated vapour pressure is dependent on the temperature of the liquid and not on the volume.
A good calorimeter should be of
low specific heat capacity and low heat conductivity
low specific heat capacity and high heat conductivity
high specific heat capacity and low heat conductivity
high specific heat capacity and low heat conductivity
dull surface and low heat conductivity
Correct answer is B
No explanation has been provided for this answer.
\(\frac{1}{4}\)
\(\frac{1}{2}\)
4
1
2
Correct answer is D
Heat = mc\(\theta\)
Hx = Dx x Vx x Cx x \(\theta\)x
Hy = Dy x Vy x Cy x \(\theta\)y
\(\frac{H_x}{H_y}\) = \(\frac{D_x \times V_x \times C_x \times \theta_x}{D_x \times V_x \times C_x \times \theta_x}\)
= 2 x \(\frac{1}{2}\)
= 1
Water shows anomalous behaviour.
below 0oC
between 0oC and 4oC
at exactly 4oC
between 4oC and 100oC
above 100oC
Correct answer is B
No explanation has been provided for this answer.
force
force/m
work
force/m3
energy/m3
Correct answer is C
slope = pressure \(\div\) \(\frac{1}{volume}\)
= \(\frac{N}{m^3}\) x \(\frac{m^3}{1}\)
= Nm = work