Post Utme Physics Past Questions and Answers

Question 666:

A \(500 kg\) truck moving with a velocity of \(6 m / s\) collides with a stationary \(100 kg\) car. The truck and the car move together after collision. What is their common velocity?

A. \(5 m / s\)
B. \(10 m / s\)
C. \(30 m / s\)
D. \(1 m / s\)

Question 667:

The process by which a metal heated to a high temperature gives off electrons from its surface is known as ____________

A. Radioactive emission
B. Field ernission
C. Photoelectric emission \(\quad\)
D. Thermionic emission

Question 668:

A total internal reflection occurs in the glass-air boundary when the angle of incidence is ____________

A. Greater than the right angle
B. Greater than critical angle
C. Greater than angle of prism
D. Greater than angle of deviation

Question 669:

At what temperature will the Celsius scale coincide with the Fahrenheit scale?

A. \(4^{\circ}\)
B. \(-273^{\circ}\)
C. \(100^{\circ}\)
D. \(-40^{\circ}\)

Question 670:

The upthrust experienced by an object immersed in a fluid makes the object feel ____________

A. Heavie
B. Lighte
C. Sink lowe
D. None of the above