POST UTME ESUT 2018 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A block of mass 5 kg is placed on a horizontal surface with a coefficient of friction of 0.5. If a horizontal force of 20 N is applied to the block, calculate the acceleration of the block.
A. 0.5 m/s^2
B. 1 m/s^2
C. 2 m/s^2
D. 4 m/s^2
Question 2
A body of mass 5 kg is moving with a velocity of 10 m/s. If it is subject 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 3
A point charge of +2 μC is placed at the origin of a coordinate system. What is the electric potential at a point 2 m away from the charge?
A. 100 V
B. 200 V
C. 400 V
D. 800 V
Question 4
A sound wave with a frequency of 200 Hz has a maximum displacement of 1 mm. What is the amplitude of the wave?
A. 0.1 mm
B. 0.5 mm
C. 1 mm
D. 5 mm
Question 5
A parallel plate capacitor has a capaci\tance of 10 μF and is charged to a potential difference of 20 V. If a dielectric slab of thickness 0.5 mm and dielectric cons\tant 3 is inserted between the plates, calculate the new capaci\tance.
A. 12 μF
B. 15 μF
C. 18 μF
D. 20 μF
Question 6
A heat engine operates between two temperatures, 500 K and 300 K. If the engine has an efficiency of 30%, what is the temperature of the hot reservoir?
A. 400 K
B. 500 K
C. 600 K
D. 700 K
Question 7
A light ray passes from air into a glass slab of re\fractive index μ = 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 8
A particle of mass 2 kg is attached to a spring with a spring cons\tant of 100 N/m. It is displaced by 0.2 m from its equilibrium position and released from rest. Assuming the motion is simple harmonic, calculate the time taken for the particle to reach its maximum velocity.
A. 0.1 s
B. 0.2 s
C. 0.5 s
D. 1 s
Question 9
A capacitor consists of two parallel plates of area $A$ separated by a dis\tance $d$. If the capaci\tance is $C$, what is the charge on the positive plate?
A. \frac{Q}{2}
B. \frac{Q}{A}
C. \frac{Q}{d}
D. Q
Question 10
A photon has an energy of 2 eV. What is its momentum?
A. 0.1 kg m/s
B. 0.2 kg m/s
C. 0.3 kg m/s
D. 0.4 kg m/s
Question 11
A capacitor of 20 μF is connected to a 50 Hz AC source. What is the reac\tance of the capacitor?
A. 100 Ω
B. 200 Ω
C. 300 Ω
D. 400 Ω
Question 12
A car is traveling at a speed of 50 km/h. If the car accelerates at a rate of 2 m/s^2 for 10 seconds, what is the final velocity of the car?
A. 52 m/s
B. 54 m/s
C. 56 m/s
D. 58 m/s
Question 13
A heat engine operates between a high-temperature reservoir at 500 K and a low-temperature reservoir at 300 K. If the engine has an efficiency of 30%, what is the temperature of the high-temperature reservoir?
A. 400 K
B. 500 K
C. 600 K
D. 700 K
Question 14
A particle of mass 1 kg is moving in a circular path with a radius of 2 m and a speed of 4 m/s. Calculate the centripetal acceleration.
A. 4 m/s^2
B. 8 m/s^2
C. 12 m/s^2
D. 16 m/s^2
Question 15
A magnetic field of 0.5 T is applied to a coil of 100 turns and 0.1 m radius. What is the magnetic flux through the coil?
A. 0.01 Wb
B. 0.05 Wb
C. 0.1 Wb
D. 0.5 Wb

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