Post Utme Physics Past Questions and Answers

Question 636:

A cell is a device which converts

A. Kinetic energy to potential energy
B. Sound energy to electrical energy
C. Chemical energy to heat energy
D. Chemical energy to electrical energy

Question 637:

In which of the following media would sound waves travel fastest

A. Kerosene
B. Alcohol
C. Wate
D. Iron

Question 638:

Which of the following is not a use of plain mirrors

A. As wing mirrors on cars
B. As a looking glass
C. In a periscope \(\quad\)
D. In a kaleidoscope

Question 639:

If \(V\) is the velocity of a wave, \(\lambda\) is its wavelength and \(T\) its period. The \(V\), \(\lambda\) and \(T\) are related by the expression

A. \(\lambda=\left.{ }^{v}\right|_{T}{ }^{2}\)
B. \(V=\lambda T\)
C. \lambda= VT\)
D. \(\frac{T}{\lambda}\)

Question 640:

Three \(3.0\) ohm resistors are connected in parallel. What is the equivalent resistance?

A. \(9.0\) ohrm
B. \(1.0 ohm\)
C. \(6.0 ohm\)
D. \(3.0 ohm\)