Post Utme University of Port Harcourt Physics Past Questions and Answers

Question 16:

What are the units of thermal conductivity?

A. Kg.m.sec ${}^2$
B. Joule. ${\sec }^{-1}{\mathrm{m}}^{-1}{\mathrm{k}}^{-1}$
C. $\mathrm{kg}\cdot \mathrm{m}$
D. Newton. ${\sec }^{-1}{\mathrm{m}}^{-1}{\mathrm{k}}^{-1}$
E. $m^1$

Question 17:

A $500\mathrm{kg}$ car which was initially at rest travelled with an acceleration of $5\mathrm{m}/{\mathrm{s}}^2$, its kinetic energy after 4 seconds was ____________

A. ${10}^5\mathrm{J}$
B. $2.5\times {10}^3\mathrm{J}$
C. $2\times {10}^3\mathrm{J}$
D. $5\times {10}^3\mathrm{J}$

Question 18:

An air force jet flying with a speed of $335{\mathrm{ms}}^{-1}$ went past an anti-aircraft gull. How far is the aircraft Ss later when the gun was fired?

A. $8.38\mathrm{m}$
B. $3.350\mathrm{m}$
C. $670\mathrm{m}$
D. $1675\mathrm{m}$
E. $67\mathrm{m}$

Question 19:

In a D.0 circuit a 10 microfarad (mf) capacitor is placed in series with a 10-ohm resistor. The total resistance of the combination is ____________

A. 10 ohms
B. 1 ohm
C. Zero
D. 20 ohms
E. Infinite

Question 20:

A potential difference of $6\mathrm{V}$ is used to produce a current of $5\mathrm{A}$ for 200s through a beating coil. The heat produced is ____________

A. $4800\mathrm{cal}$
B. $6000\mathrm{cal}$
C. $2400\mathrm{J}$
D. $240\mathrm{kcal}$
E. 6000] equation