Post Utme Physics Past Questions and Answers

Question 726:

which of the following phenomena is called photoelectric effect ____________

A. High energy electrons impinge on a metallic anode which then emits protons
B. A high energy proton emits protons as it is slowed down
C. A metal absorbs quanta of light and then emits electrons
D. Two electrons are created from a quantum of light

Question 727:

UNIVERSITY OF UYO, UYO POST-UTME SCREENING EXERCISE 2008/2009 SESSION PHYSICS Which of the following materials is a conductor?

A. Plastic
B. Sodium
C. Wax
D. Glass

Question 728:

The charge carries in gases are ____________

A. Ions only
B. Electrons and holes
C. Electrons only
D. Electrons and ions

Question 729:

The time it will take a certain radioactive materials with a half-life of 50 days to reduce to 1/32 of its original numbers is ____________

A. 300days
B. 150 days
C. 20days
D. 250days

Question 730:

The amount of energy released when 0.3kg of ranium burnt completely is ____________

A. 4.5x1016J
B. 1.5V 1016
C. 1.5x1016J
D. 4.5 x106J