POST UTME DELSU 2017 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A particle of mass 2 kg is attached to a spring with a spring cons\tant of 10 N/m. If the particle is displaced by 0.5 m from its equilibrium position and released from rest, calculate the maximum kinetic energy of the particle.
A. 0.5 J
B. 1.0 J
C. 1.5 J
D. 2.0 J
Question 2
A 100 Ω resistor is connected in parallel with a 200 Ω resistor. What is the equivalent resis\tance of the circuit?
A. 50 Ω
B. 66.67 Ω
C. 100 Ω
D. 200 Ω
Question 3
A convex lens of focal length 20 cm is placed 30 cm to the left of a concave lens of focal length -15 cm. An object is placed 60 cm to the left of the convex lens. Find the position of the final image.
A. 40 cm to the right of the concave lens
B. 50 cm to the right of the concave lens
C. 60 cm to the right of the concave lens
D. 70 cm to the right of the concave lens
Question 4
A simple harmonic motion has a maximum displacement of 2 m and a period of 4 s. If the motion starts from its equilibrium position, what is the amplitude of the motion?
A. 1 m
B. 2 m
C. 3 m
D. 4 m
Question 5
A 100 µF capacitor is connected in series with a 200 µF capacitor and a 50 µF inductor. If the frequency of the AC source is 50 Hz, calculate the impedance of the circuit.
A. 150 µF
B. 200 µF
C. 250 µF
D. 300 µF
Question 6
A light ray passes through a prism of angle 60° and is re\fracted at an angle of 30°. What is the angle of deviation?
A. ( 30° )
B. ( 45° )
C. ( 60° )
D. ( 90° )
Question 7
A radioactive sample has a half-life of 5 years. If the initial activity is 100 Bq, what is the activity after 10 years?
A. 12.5 Bq
B. 25 Bq
C. 50 Bq
D. 100 Bq
Question 8
A radioactive sample of uranium-238 decays into thorium-234 with a half-life of 4.5 billion years. If the initial mass of uranium-238 is 100 g, what is the mass of thorium-234 after 9 billion years?
A. 0.25 g
B. 0.5 g
C. 1 g
D. 1.5 g
Question 9
A block of mass 5 kg is attached to a horizontal spring with a force cons\tant of 200 N/m. The block is displaced by 2 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 10
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 centripetal acceleration?
A. 12 m/s^2
B. 16 m/s^2
C. 20 m/s^2
D. 24 m/s^2
Question 11
A parallel plate capacitor has plates of area 0.04 m^2, separated by a dis\tance of 0.02 m. If the capaci\tance is 2.5 x 10^-10 F, what is the charge on the plates when the potential difference between them is 100 V?
A. 1.25 x 10^-8 C
B. 2.5 x 10^-8 C
C. 5.0 x 10^-8 C
D. 7.5 x 10^-8 C
Question 12
A 100 W heater is connected to a 230 V AC source. If the power factor of the heater is 0.8, calculate the current drawn by the heater.
A. 0.5 A
B. 1.0 A
C. 1.5 A
D. 2.0 A
Question 13
A gas at 300 K is heated to 500 K. Assuming the volume remains cons\tant, calculate the ratio of the final pressure to the initial pressure.
A. 1.67
B. 2.00
C. 3.33
D. 4.00
Question 14
A block of mass 5 kg is placed on a frictionless surface and a horizontal force of 10 N is applied to it. What is the acceleration of the block?
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 15
A force of 10 N is applied to an object, cau\sing it to accelerate at 2 m/s^2. What is the mass of the object?
A. 2.5 kg
B. 5.0 kg
C. 7.5 kg
D. 10 kg

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