Post Utme Federal University of Technology, Owerri Physics Past Questions and Answers

Question 1:

Which of the following is true for the image formed by a convex mirror?
I. The image is always virtual
II. The image is always erect
III. The image is never magnified
IV. The image is never magnified
V. the focal length is negative

A. I only
B. I and II only
C. II and III only
D. I, II, If and IV only
E. All five

Question 2:

Which of the following statement is true?
The reading of pressure on mercury dialmeter is ifdependent of ____________

A. The eross sectional area of the tube
B. The atmospheric pressure of the tube
C. The censity ofmereury
D. The temperature of mercury
E. The acceleration due to gravity

Question 3:

In electrolysis experiment, a cathode of mass \(5 g\) is found to weight \(5.019\) after a current of \(5 A\) flows for 50 sec.
what is the electrochemical equivalent of the deposited substance?

A. \(9.00004 g / C\)
B. \(0.00002 g / C\)
C. \(0.02500 d / C\)
D. \(0.05000 g / C\)
E. \(0.00001 g / C\)

Question 4:

A capacitor and a resistor are connected in series with eachh other and if hegligible internal resistance.
The potential difference across the terminals of the capacitor.

A. Twice the e.m.f of the accumulator
B. Less than the e.m.f by the potential drop across the resistor
C. Zero
D. The same as the e.m.f
E. Greater than the e.m.f

Question 5:

A weight of 1000 grams hangs from a lever \(20 cm\) to the right of the fulcrum. At the left is 500 gram weight \(20 cm\) from the fulcrum, and a 200 gram weight \(x\) cmaway from the fulcrum. What is the value of \(x\) that will make the lever balanced?

A. \(50 cm\)
B. \(20 cm\)
C. \(10 cm\)
D. \(30 cm\)
E. \(70 cm\)