POST UTME OSUSTECH 2024 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A capacitor of capaci\tance 10 μF is charged to a potential difference of 100 V. What is the energy stored in the capacitor?
A. 100 J
B. 500 J
C. 1000 J
D. 2000 J
Question 2
A simple harmonic motion has a maximum displacement of 0.2 m and a frequency of 5 Hz. Calculate the angular frequency.
A. 10 rad/s
B. 20 rad/s
C. 30 rad/s
D. 40 rad/s
Question 3
A block of wood with mass 0.5 kg is attached to a spring with spring cons\tant 10 N/m. If the block is displaced by 0.2 m from its equilibrium position and released from rest, calculate the time period of oscillation.
A. 1.57 s
B. 3.14 s
C. 6.28 s
D. 12.56 s
Question 4
A body of mass 5 kg is moving with a velocity of 10 m/s. If the body is subjected to a force of 20 N, what is the acceleration of the body?
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 5
A block of mass 8 kg is attached to a horizontal spring with a spring cons\tant of 30 N/m. If the block is displaced by 3 m from its equilibrium position and released from rest, what is the maximum speed of the block?
A. 4 m/s
B. 6 m/s
C. 8 m/s
D. 10 m/s
Question 6
A particle is moving in a circular path with a radius of 0.5 m. If the particle completes one revolution in 2 s, calculate the angular velocity.
A. 1.57 rad/s
B. 3.14 rad/s
C. 6.28 rad/s
D. 12.56 rad/s
Question 7
A 5 kg block is attached to a horizontal spring with a force cons\tant of 100 N/m. If the block is displaced by 2 m from its equilibrium position and released, what is its maximum velocity?
A. 2 m/s
B. 4 m/s
C. 6 m/s
D. 8 m/s
Question 8
A particle of mass 2 kg is moving in a circular path of radius 3 m with a cons\tant speed of 4 m/s. If the particle is subjected to a centripetal force of 12 N, what is the magnitude of the acceleration of the particle?
A. 1 m/s^2
B. 2 m/s^2
C. 3 m/s^2
D. 4 m/s^2
Question 9
A block of wood with density 500 kg/m^3 is floating in water. If the block has a volume of 0.1 m^3, calculate the weight of the block.
A. 49 N
B. 98 N
C. 147 N
D. 196 N
Question 10
A capacitor of capaci\tance 3 μF is connected to a battery of voltage 15 V. If the capacitor is initially uncharged, what is the charge on the capacitor after 3 seconds?
A. 0.03 C
B. 0.06 C
C. 0.09 C
D. 0.12 C
Question 11
A block of mass 5 kg is moving in a circular path of radius 4 m with a cons\tant speed of 3 m/s. If the block is subjected to a centripetal force of 15 N, what is the magnitude of the acceleration of the block?
A. 1 m/s^2
B. 2 m/s^2
C. 3 m/s^2
D. 4 m/s^2
Question 12
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 2 Ω resistor connected in series. What is the current flowing through the 4 Ω resistor?
A. 1 A
B. 2 A
C. 3 A
D. 4 A
Question 13
A current of 5 A flows through a resistor of resis\tance 10 Ω. If the voltage across the resistor is 20 V, what is the power dissipated by the resistor?
A. 10 W
B. 20 W
C. 30 W
D. 40 W
Question 14
A light ray 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°
Question 15
A particle of mass $m$ is moving in a circular path of radius $r$ with a cons\tant speed $v$. If the particle is subjected to a uniform magnetic field of strength $B$ perp\endicular to the plane of the circle, what is the magnitude of the magnetic force acting on the particle?
A. \( \frac{mv^2}{r} \)
B. \( \frac{mv}{r} \)
C. \( \frac{m^2v^2}{r^2} \)
D. \( \frac{mv^2}{r^2} \)

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