Post Utme Physics Past Questions and Answers

Question 921:

Calculate the length of a constant wire of cross-sectional area 4x x 10° m and resistivity 1.1 x 10 Qm (take x as = )

A. 0.42m
B. 0.90m
C. 1.00m
D. 2.25m

Question 922:

A body moves along a circular path with uniform angular speed of 0.6rad 8°? and a constant speed of 3.0 ms”. Calculate the acceleration of the body toward the centre of the circle.

A. 25.0 ms?
B. 5.4 ms?
C. 5.0 ms
D. 1.8 ms?
E. 0.2 ms?

Question 923:

Which of the following statement is true?

A. The loudness of sound is determined by its frequency
B. Musical notes consists of combination of sounds and regular frequency
C. The combination of overtones produced by musical instrument determine the quality of sound
D. The pitch of a note depends on frequency of vibration
E. Noise can be produced by a combination of sounds of irregular sounds

Question 924:

A boy timed 20 oscillation of a certain pendulum three times and obtained 44.3s, 45.5s, and 47.7s respectively. Calculate the mean period of oscillation of the pendulum ____________

A. 0.135
B 2.225
B. 2.26s
C. 44.30s
D. 45.17s

Question 925:

Which of the following statement is an advantage of nuclear fusion over nuclear fission?

A. The resulting chain reaction which produces large amount of energy
B. No radioactive waste is produced as byproduct
C. Very high temperature is required in the process
D. The end product is lead
E. Radioactive waste is generated