Post Utme Physics Past Questions and Answers

Question 1286:

The resistance of a $5m$ 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. $-5mm$
B. $+5mm$
C. $5cm$
D. $+5cm$
E. $-5.5mm$

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