Post Utme Physics Past Questions and Answers

Question 1091:

Calculate the acceleration of the system (in terms of the acceleration due to gravity, g), when it is released.

A. \(0.38 g\)
B. \(0.13 g \)
C. \(0 .15 g\)
D. \(0.39 g\)

Question 1092:

The reading on ADE temperature scale at the ice melting point is \(40^{\circ} A\) and \(80^{\circ} A\) at the steam point. Calculate the reading on the Celsius scale equivalent to \(50^{\circ} A\).

A. \(25^{\circ} C\)
B. \(40^{\circ} C\)
C. \(45^{\circ} C\)
D. \(60^{\circ} C\)

Question 1093:

Calculate the heat required to convert \(10 g\) of ice at \(-10^{\circ} C\) to water at \(50^{\circ} C\). The specific heat capacity of ice and water are \(2100 J / kgK\) and \(4200 J / kgK\) respectively. The latent heat of fusion of ice is \(3.4 \times 10^{5} JK ^{-1}\)

A. \(2.10 kJ\)
B. \(4.20 kJ\)
C. \(3.21 kJ\)
D. \(5.71 kJ\)

Question 1094:

Which of the following combination of factors do not affect evaporation?
(i) Temperature (ii) Nature of liquid exposed
(iii) Impurities (iv) Pressure (v) Humidity (vi) Draught
(vii) linear expansivity (viii) electro negativity

A. Vii and viii
B. I, ii, iii
C. Iii, iv, v, vi
D. I, ii, iii, iv, v

Question 1095:

A solid is said to sublime if it changes from

A. Solid to liquid state
B. Solid to molten state
C. Solid to gaseous state
D. Solid to solid state