POST UTME IMS U 2024 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A wave has a frequency of 100 Hz and a wavelength of 0.5 m. What is the speed of the wave?
A. 20 m/s
B. 30 m/s
C. 40 m/s
D. 50 m/s
Question 2
A uniform magnetic field of magnitude 2 T is directed along the z-axis. A current of 5 A flows through a straight wire of length 0.5 m, placed along the x-axis. What is the magnitude of the magnetic force experienced by the wire?
A. 0.25 N
B. 0.5 N
C. 1 N
D. 2 N
Question 3
A radioactive sample of $^{238}U$ undergoes \alpha decay. If the half-life of $^{238}U$ is $4.5 \times 10^9$ years, what is the activity of the sample after $1.8 \times 10^9$ years?
A. 1.2 x 10^9 Bq
B. 2.4 x 10^9 Bq
C. 4.8 x 10^9 Bq
D. 6.0 x 10^9 Bq
Question 4
A parallel plate capacitor has a capaci\tance of 10 μF. If a potential difference of 5 V is applied across the plates, calculate the energy stored in the capacitor.
A. 25 μJ
B. 50 μJ
C. 75 μJ
D. 100 μJ
Question 5
A 50 Hz AC generator produces an emf of 200 V. If the current in the circuit is 5 A, what is the impedance of the circuit?
A. 20 Ω
B. 30 Ω
C. 40 Ω
D. 50 Ω
Question 6
A gas is heated from 300 K to 400 K at cons\tant volume. If the initial volume is 2.5 L, what is the final volume?
A. 3.33 L
B. 4.17 L
C. 5.00 L
D. 6.25 L
Question 7
A convex lens of focal length 20 cm is placed in contact with a concave lens of focal length -15 cm. Find the focal length of the combination.
A. -5 cm
B. -10 cm
C. -15 cm
D. 20 cm
Question 8
A block of mass 5 kg is placed on a horizontal, frictionless surface. A horizontal force of 10 N is applied to the block, cau\sing it to accelerate. Find the acceleration of the block.
A. 0.5 m/s^2
B. 1 m/s^2
C. 2 m/s^2
D. 5 m/s^2
Question 9
A particle of mass 2 kg is attached to a spring with spring cons\tant 10 N/m. If the particle is displaced by 0.5 m from its equilibrium position and released, what is the maximum speed of the particle?
A. 0.25 m/s
B. 0.50 m/s
C. 0.75 m/s
D. 1.00 m/s
Question 10
A block of mass 5 kg is placed on a frictionless surface and 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 the maximum speed of the block?
A. 2 m/s
B. 4 m/s
C. 6 m/s
D. 8 m/s
Question 11
A 5 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. The block is displaced by 2 m from its equilibrium position and released from rest. Find the maximum speed of the block.
A. 2 m/s
B. 4 m/s
C. 6 m/s
D. 8 m/s
Question 12
A parallel plate capacitor has a capaci\tance of 10 μF. If a potential difference of 50 V is applied across the plates, what is the charge stored on the capacitor?
A. 2.5 μC
B. 5 μC
C. 10 μC
D. 20 μC
Question 13
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. What is the magnitude of the net force acting on the particle?
A. 10 N
B. 20 N
C. 30 N
D. 40 N
Question 14
A light wave with wavelength $\lambda$ and frequency $f$ is traveling through a medium with speed $v$. If the wave is re\fracted through a surface, what is the angle of re\fraction?
A. \frac{v_2}{v_1} \theta_1
B. \frac{v_1}{v_2} \theta_1
C. \frac{\lambda}{\lambda'} \theta_1
D. \frac{\lambda'}{\lambda} \theta_1
Question 15
A wave has a frequency of 60 Hz and a wavelength of 1.5 m. What is the speed of the wave?
A. 150 m/s
B. 200 m/s
C. 250 m/s
D. 300 m/s

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