POST UTME SUMMIT UNIVERSITY 2017 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A block of mass 2 kg is attached to a spring with a spring cons\tant of 100 N/m. If the block is displaced by 0.2 m from its equilibrium position and released, what is the maximum speed of the block?
A. 0.5 m/s
B. 1 m/s
C. 2 m/s
D. 4 m/s
Question 2
A light ray passes through a prism of angle 30° and is re\fracted at an angle of 20°. If the angle of incidence is 40°, what is the angle of emergence?
A. 50°
B. 60°
C. 70°
D. 80°
Question 3
A parallel plate capacitor has plates of area 0.04 m^2 and separation 0.02 m. The capaci\tance is 2.5 nF. If a potential difference of 10 V is applied across the plates, calculate the energy stored in the capacitor.
A. 1.25 \times 10^{-7} J
B. 2.5 \times 10^{-7} J
C. 5.0 \times 10^{-7} J
D. 1.0 \times 10^{-6} J
Question 4
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. 20°
B. 30°
C. 40°
D. 50°
Question 5
A block of mass 5 kg is attached to a horizontal spring with a spring cons\tant of 200 N/m. The block is displaced by 0.2 m from its equilibrium position and released from rest. Assuming the block undergoes simple harmonic motion, calculate the maximum speed of the block.
A. 2 m/s
B. 4 m/s
C. 6 m/s
D. 8 m/s
Question 6
A thermodynamic system undergoes a process from state A to state B. If the internal energy of the system increases by 100 J and the work done on the system is 50 J, what is the heat transferred to the system?
A. 50 J
B. 100 J
C. 150 J
D. 200 J
Question 7
A thermodynamic system undergoes a process in which its internal energy increases by 100 J and its volume decreases by 20 cm^3. If the system is initially at a temperature of 300 K, what is its final temperature?
A. 320 K
B. 330 K
C. 340 K
D. 350 K
Question 8
A radioactive sample has a half-life of 5 years. If the initial activity is 100 Bq, what is the activity after 15 years?
A. 12.5 Bq
B. 25 Bq
C. 50 Bq
D. 100 Bq
Question 9
A 10 kg block of copper is heated from 20°C to 80°C. If the specific heat capacity of copper is 0.385 J/g°C, calculate the energy required to heat the block.
A. 2500 J
B. 5000 J
C. 7500 J
D. 10000 J
Question 10
A parallel plate capacitor has plates of area 0.04 m^2 and separation 0.02 m. The capaci\tance is 2.5 nF. If a potential difference of 10 V is applied across the plates, calculate the charge stored on the capacitor.
A. 1.25 \times 10^{-8} C
B. 2.5 \times 10^{-8} C
C. 5.0 \times 10^{-8} C
D. 1.0 \times 10^{-7} C
Question 11
A radioactive sample has a half-life of 10 years. If the initial activity is 1000 Bq, calculate the time required for the activity to decrease to 500 Bq.
A. 5 years
B. 10 years
C. 15 years
D. 20 years
Question 12
A parallel plate capacitor has a capaci\tance of 10 μF and is charged to a potential difference of 20 V. If the plates are then separated by a dis\tance of 5 mm, what is the new capaci\tance?
A. 5.00 μF
B. 10.0 μF
C. 20.0 μF
D. 50.0 μF
Question 13
A parallel plate capacitor has a capaci\tance of 10 μF and is charged to a potential difference of 20 V. If the dis\tance between the plates is doubled, what is the new potential difference?
A. 10 V
B. 20 V
C. 40 V
D. 80 V
Question 14
A beam of light passes through a prism and is re\fracted. If the angle of incidence is 30° and the angle of re\fraction is 20°, what is the angle of deviation?
A. 10°
B. 20°
C. 30°
D. 40°
Question 15
A beam of light passes through a prism and is re\fracted. If the angle of incidence is 30° and the angle of re\fraction is 20°, calculate the angle of deviation.
A. 10°
B. 20°
C. 30°
D. 40°

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