POST UTME LAUTECH 2019 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A simple harmonic motion has a frequency of 2 Hz and an amplitude of 0.5 m. If the initial phase angle is 90°, what is the equation of motion?
A. y = 0.5 \sin\( 2πt + 90° \)
B. y = 0.5 \sin\( 2πt - 90° \)
C. y = 0.5 \cos\( 2πt + 90° \)
D. y = 0.5 \cos\( 2πt - 90° \)
Question 2
A thermodynamic system undergoes a cyclic process, returning to its initial state. If the system absorbs 500 J of heat energy during the process, what is the change in its internal energy?
A. -500 J
B. 0 J
C. 500 J
D. 1000 J
Question 3
A magnetic field is produced by a current-carrying wire. If the current is 2 A and the length of the wire is 1 m, what is the magnitude of the magnetic field at a dis\tance of 0.5 m from the wire?
A. 0.1 T
B. 0.2 T
C. 0.5 T
D. 1 T
Question 4
A particle moves in a circular path with a cons\tant speed of 5 m/s. If the radius of the circle is 2 m, what is the magnitude of the centripetal acceleration?
A. 2 m/s^2
B. 5 m/s^2
C. 10 m/s^2
D. 20 m/s^2
Question 5
A ray of light passes from air into a glass block with a re\fractive index of 1.5. If the angle of incidence is 30°, what is the angle of re\fraction?
A. 20°
B. 30°
C. 40°
D. 50°

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