POST UTME UI 2024 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 5 kg block is moving in a straight line with a velocity of 2 m/s. If the block experiences a force of 10 N, what is the acceleration of the block?
A. 0.5 m/s²
B. 1.0 m/s²
C. 1.5 m/s²
D. 2.0 m/s²
Question 2
A heat engine operates between two temperatures $T_1$ and $T_2$. The efficiency of the engine is $\eta$. What is the ratio of the temperatures $\frac{T_1}{T_2}$?
A. 1+\eta
B. 1-\eta
C. \frac{1+\eta}{\eta}
D. \frac{1-\eta}{\eta}
Question 3
A convex lens of focal length 20 cm is placed in contact with a concave lens of focal length -15 cm. What is the focal length of the combination?
A. 10 cm
B. 15 cm
C. 20 cm
D. 25 cm
Question 4
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 force acting on the particle?
A. 10 N
B. 12 N
C. 15 N
D. 18 N
Question 5
A parallel plate capacitor has plates of area $A$ and separation $d$. The capaci\tance is $C$. If the separation is doubled, what is the new capaci\tance $C'$?
A. \frac{C}{2}
B. \frac{C}{4}
C. C
D. 2C
Question 6
A 2 kg block is moving in a circular path with a radius of 1 m. If the block is moving at a speed of 3 m/s, what is the centripetal acceleration of the block?
A. 3 m/s²
B. 6 m/s²
C. 9 m/s²
D. 12 m/s²
Question 7
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 subject to a centripetal force of 12 N, what is the magnitude of the acceleration of the particle?
A. 4 m/s^2
B. 6 m/s^2
C. 8 m/s^2
D. 10 m/s^2
Question 8
A 2 kg object is moving in a circular path with a radius of 3 m. The object's velocity is 4 m/s. Calculate the centripetal force acting on the object.
A. 10 N
B. 20 N
C. 30 N
D. 40 N
Question 9
A block of mass $m$ is attached to a spring with spring cons\tant $k$. The block is displaced by a dis\tance $x$ and released from rest. What is the angular frequency of the resulting simple harmonic motion?
A. \sqrt{\frac{k}{m}}
B. \sqrt{\frac{m}{k}}
C. \frac{k}{m}
D. \frac{m}{k}
Question 10
A 10 kg block is moving in a straight line with a velocity of 5 m/s. If the block experiences a force of 20 N, what is the acceleration of the block?
A. 0.5 m/s²
B. 1.0 m/s²
C. 1.5 m/s²
D. 2.0 m/s²
Question 11
A light ray passes from air into a glass slab of re\fractive index 1.5. If the angle of incidence is 30°, what is the angle of re\fraction?
A. 18°
B. 22°
C. 25°
D. 28°
Question 12
A 200 m long string is fixed at both \ends. A 50 Hz wave is produced on the string with an amplitude of 2 cm. Calculate the wavelength of the wave.
A. 400 m
B. 500 m
C. 600 m
D. 700 m
Question 13
A coil of wire is placed in a magnetic field of strength 0.5 T. If the coil has 100 turns and a resis\tance of 10 Ω, what is the induced emf in the coil when the magnetic flux through it changes at a rate of 2 Wb/s?
A. 0.1 V
B. 0.2 V
C. 0.5 V
D. 1 V
Question 14
A magnetic field is produced by a current-carrying wire. If the current is 2 A and the length of the wire is 0.5 m, what is the magnetic field strength at a dis\tance of 0.2 m from the wire?
A. 0.1 T
B. 0.2 T
C. 0.3 T
D. 0.4 T
Question 15
A thermodynamic system undergoes a process from state A to state B. The change in internal energy is given by \( Delta U = Q - W \). If the system absorbs 500 J of heat and does 200 J of work, what is the change in internal energy?
A. 600 J
B. 400 J
C. 200 J
D. -200 J

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