Post Utme Physics Past Questions and Answers

Question 1286:

The resistance of a \(5 m\) uniform wire of cross sectoonal area of \(0.2 \times 10^{6} m ^{2}\) is \(0.45\). What is the resistivity of the material of the wire?

A. \(1.10 \times 10^{5}\) ohms
B. \(4.25 \times 10^{6} ohms\)
C. \(2.40 \times 10^{7}\) ohms
D. \(1.70 \times 10^{8}\) ohms m
E. \(1.40 \times 10^{8}\) ohms \(m\)

Question 1287:

Which of the following instrument has pure tone?

A. Guitar
B. Vibrating String
C. Turning forks
D. Screen
E. Horns

Question 1288:

Four lenses are being considered for use as a microscope object. Which of the following focal length is most suitable ____________

A. \(-5 mm\)
B. \(+5 mm\)
C. \(5 cm\)
D. \(+5 cm\)
E. \(-5.5 mm\)

Question 1289:

The product \(PV\) where \(P\) is pressure and \(V\) is a volume has the same unit as ____________

A. Force
B. Power
C. Energy
D. Acceleration
E. All of the above

Question 1290:

The force with which an object is attracted to the earth is called ____________

A. Acceleration
B. Mass
C. Gravity
D. Impulse
E. Weight