Post Utme Physics Past Questions and Answers

Question 236:

A ray of light is incident on a plane surface at \(\mathrm{Al}\) angle of \(40^{\circ}\). What is the angle of reflection?

A. \(40^{\circ}\)
B. \(80^{\circ}\)
C. \(200^{\circ}\)
D. \(50^{\circ}\)

Question 237:

The particle and wave nature of matter are demonstrated in the equation ____________

A. \(\lambda=h c / \hbar\)
B. \(\lambda=c / f\)
C. \(\lambda \equiv h / p\)
D. \(\lambda=2 d \sin 0\)

Question 238:

A 12-V battery has an internal resistance of \(0.5\) ohms. If a cable of \(1.0\) ohms resistance is connected across the two terminals of the battery, the power dissipated is ____________

A. \(64 W\)
B. \(96 \mathrm{~W}\)
C. \(9.6 \mathrm{~W}\)
D. 192W

Question 239:

The force oil a current carrying conductor. in a magnetic field is greatest when the ____________

A. Conductor makes an angle \(60^{\circ}\) with the field
B. Force is independent of the angle between the field and the conductor
C. Conductor is parallel with the field
D. Conductor is at right angles with the field

Question 240:

The kind of nuclear reactioninitiated bombardment of neutron is ____________

A. Nuclear infusion
B. Nuclear fission
C. Nuclear fusion
D. Radioactivity