Репост из: Ethio Entrance exam🔐
Entrance exam 550/600
Ethiopian Grade 12 Physics:
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1. A car accelerates uniformly from rest to a speed of 20 m/s in 10 seconds. What is the distance covered by the car during this time?
A) 100 m
B) 200 m
C) 300 m
D) 400 m
Answer: B) 200 m
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2. A projectile is fired at an angle of 45° with an initial velocity of 40 m/s. What is the time of flight? (Assume g = 9.8 m/s²)
A) 8.16 s
B) 4.08 s
C) 6.12 s
D) 10.24 s
Answer: B) 4.08 s
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3. In a circuit with a 10 V battery and three resistors (5Ω, 10Ω, and 15Ω) connected in series, what is the total resistance?
A) 10Ω
B) 15Ω
C) 30Ω
D) 5Ω
Answer: C) 30Ω
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4. The time period of a simple pendulum is 2 seconds. What is the frequency of oscillation?
A) 0.5 Hz
B) 1 Hz
C) 2 Hz
D) 4 Hz
Answer: B) 1 Hz
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5. A 60 W light bulb is connected to a 240 V source. What is the current flowing through the bulb?
A) 0.25 A
B) 0.5 A
C) 1 A
D) 2 A
Answer: B) 0.25 A
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6. If the velocity of a wave is 20 m/s and its frequency is 4 Hz, what is its wavelength?
A) 5 m
B) 4 m
C) 3 m
D) 2 m
Answer: A) 5 m
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7. A 0.5 kg mass is attached to a spring with a spring constant of 100 N/m. What is the oscillation period of the mass-spring system?
A) 0.5 s
B) 1 s
C) 2 s
D) 4 s
Answer: B) 1 s
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8. A wave travels through a medium with a speed of 300 m/s. If its frequency is 50 Hz, what is the wavelength of the wave?
A) 1.5 m
B) 6 m
C) 15 m
D) 30 m
Answer: B) 6 m
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9. In an ideal gas, if the volume is doubled while the pressure is halved, what happens to the temperature?
A) It remains the same
B) It is doubled
C) It is halved
D) It is quadrupled
Answer: A) It remains the same
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10. The electric field inside a uniformly charged sphere is:
A) Zero
B) Uniform and directed outward
C) Uniform and directed inward
D) Radial and increases with distance from the center
Answer: D) Radial and increases with distance from the center
Ethiopian Grade 12 Physics:
---
1. A car accelerates uniformly from rest to a speed of 20 m/s in 10 seconds. What is the distance covered by the car during this time?
A) 100 m
B) 200 m
C) 300 m
D) 400 m
Answer: B) 200 m
---
2. A projectile is fired at an angle of 45° with an initial velocity of 40 m/s. What is the time of flight? (Assume g = 9.8 m/s²)
A) 8.16 s
B) 4.08 s
C) 6.12 s
D) 10.24 s
Answer: B) 4.08 s
---
3. In a circuit with a 10 V battery and three resistors (5Ω, 10Ω, and 15Ω) connected in series, what is the total resistance?
A) 10Ω
B) 15Ω
C) 30Ω
D) 5Ω
Answer: C) 30Ω
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4. The time period of a simple pendulum is 2 seconds. What is the frequency of oscillation?
A) 0.5 Hz
B) 1 Hz
C) 2 Hz
D) 4 Hz
Answer: B) 1 Hz
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5. A 60 W light bulb is connected to a 240 V source. What is the current flowing through the bulb?
A) 0.25 A
B) 0.5 A
C) 1 A
D) 2 A
Answer: B) 0.25 A
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6. If the velocity of a wave is 20 m/s and its frequency is 4 Hz, what is its wavelength?
A) 5 m
B) 4 m
C) 3 m
D) 2 m
Answer: A) 5 m
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7. A 0.5 kg mass is attached to a spring with a spring constant of 100 N/m. What is the oscillation period of the mass-spring system?
A) 0.5 s
B) 1 s
C) 2 s
D) 4 s
Answer: B) 1 s
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8. A wave travels through a medium with a speed of 300 m/s. If its frequency is 50 Hz, what is the wavelength of the wave?
A) 1.5 m
B) 6 m
C) 15 m
D) 30 m
Answer: B) 6 m
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9. In an ideal gas, if the volume is doubled while the pressure is halved, what happens to the temperature?
A) It remains the same
B) It is doubled
C) It is halved
D) It is quadrupled
Answer: A) It remains the same
---
10. The electric field inside a uniformly charged sphere is:
A) Zero
B) Uniform and directed outward
C) Uniform and directed inward
D) Radial and increases with distance from the center
Answer: D) Radial and increases with distance from the center