Grade 11 Physics based on the Ethiopian curriculum:
---
1. Which of the following is NOT a vector quantity?
A) Displacement
B) Force
C) Speed
D) Velocity
Answer: C) Speed
---
2. A car accelerates uniformly from rest to a speed of 30 m/s in 10 seconds. What is its acceleration?
A) 2 m/s²
B) 3 m/s²
C) 5 m/s²
D) 10 m/s²
Answer: B) 3 m/s²
---
3. A ball is thrown vertically upward with a velocity of 20 m/s. How long will it take to reach its maximum height? (Take )
A) 1 second
B) 2 seconds
C) 3 seconds
D) 4 seconds
Answer: B) 2 seconds
---
4. Which of the following statements about Newton’s First Law is correct?
A) It explains the relationship between force and acceleration.
B) It is also known as the law of inertia.
C) It states that every action has an equal and opposite reaction.
D) It deals with the force of gravity.
Answer: B) It is also known as the law of inertia.
---
5. If the momentum of an object is doubled, what happens to its kinetic energy?
A) It is halved.
B) It remains the same.
C) It doubles.
D) It quadruples.
Answer: D) It quadruples.
---
6. What is the work done when a force of 50 N moves an object 10 m in the direction of the force?
A) 5 J
B) 50 J
C) 500 J
D) 5000 J
Answer: C) 500 J
---
7. A spring stretches by 5 cm when a 2 N force is applied. What is the spring constant?
A) 40 N/m
B) 20 N/m
C) 10 N/m
D) 4 N/m
Answer: A) 40 N/m
---
8. An object is dropped from a height of 80 m. How long does it take to reach the ground? (Ignore air resistance, take )
A) 2 seconds
B) 4 seconds
C) 6 seconds
D) 8 seconds
Answer: B) 4 seconds
---
9. What is the frequency of a wave if its wavelength is 2 m and its speed is 340 m/s?
A) 170 Hz
B) 340 Hz
C) 680 Hz
D) 85 Hz
Answer: A) 170 Hz
---
10. Two resistors, and , are connected in parallel. What is the equivalent resistance?
A)
B)
C)
D)
Answer: C)
---
1. Which of the following is NOT a vector quantity?
A) Displacement
B) Force
C) Speed
D) Velocity
Answer: C) Speed
---
2. A car accelerates uniformly from rest to a speed of 30 m/s in 10 seconds. What is its acceleration?
A) 2 m/s²
B) 3 m/s²
C) 5 m/s²
D) 10 m/s²
Answer: B) 3 m/s²
---
3. A ball is thrown vertically upward with a velocity of 20 m/s. How long will it take to reach its maximum height? (Take )
A) 1 second
B) 2 seconds
C) 3 seconds
D) 4 seconds
Answer: B) 2 seconds
---
4. Which of the following statements about Newton’s First Law is correct?
A) It explains the relationship between force and acceleration.
B) It is also known as the law of inertia.
C) It states that every action has an equal and opposite reaction.
D) It deals with the force of gravity.
Answer: B) It is also known as the law of inertia.
---
5. If the momentum of an object is doubled, what happens to its kinetic energy?
A) It is halved.
B) It remains the same.
C) It doubles.
D) It quadruples.
Answer: D) It quadruples.
---
6. What is the work done when a force of 50 N moves an object 10 m in the direction of the force?
A) 5 J
B) 50 J
C) 500 J
D) 5000 J
Answer: C) 500 J
---
7. A spring stretches by 5 cm when a 2 N force is applied. What is the spring constant?
A) 40 N/m
B) 20 N/m
C) 10 N/m
D) 4 N/m
Answer: A) 40 N/m
---
8. An object is dropped from a height of 80 m. How long does it take to reach the ground? (Ignore air resistance, take )
A) 2 seconds
B) 4 seconds
C) 6 seconds
D) 8 seconds
Answer: B) 4 seconds
---
9. What is the frequency of a wave if its wavelength is 2 m and its speed is 340 m/s?
A) 170 Hz
B) 340 Hz
C) 680 Hz
D) 85 Hz
Answer: A) 170 Hz
---
10. Two resistors, and , are connected in parallel. What is the equivalent resistance?
A)
B)
C)
D)
Answer: C)