Mock Test- Physics -Class 11th | Laws of Motion, Work Energy and Power, System of particles and rotational motion , Gravitation

NFAT BTech Computer Science Entrance Exam Mock Test 2025

Physics (27 Questions)

1. A block of mass 2 kg is pushed with a force of 20 N on a frictionless surface. What is the acceleration of the block?

A) 5 m/s²

B) 8 m/s²

C) 10 m/s²

D) 12 m/s²

2. A 5 kg object experiences a net force of 15 N. What is the time taken to change its velocity from 10 m/s to 20 m/s?

A) 2.5 s

B) 3.33 s

C) 4 s

D) 5 s

3. A car of mass 1000 kg is moving at 20 m/s. If the brakes apply a constant force of 4000 N, how far does the car travel before stopping?

A) 50 m

B) 75 m

C) 100 m

D) 125 m

4. Two objects of masses 3 kg and 5 kg are moving towards each other with velocities 4 m/s and 3 m/s respectively. What is the total momentum of the system before collision?

A) 3 kg·m/s

B) 5 kg·m/s

C) 7 kg·m/s

D) 3 kg·m/s

5. A 10 N force is applied at an angle of 30° to a 2 kg block on a frictionless surface. What is the horizontal acceleration?

A) 3.5 m/s²

B) 4.33 m/s²

C) 5 m/s²

D) 6 m/s²

6. A body of mass 4 kg is acted upon by a force of 12 N for 2 s. What is the change in momentum?

A) 12 kg·m/s

B) 18 kg·m/s

C) 24 kg·m/s

D) 30 kg·m/s

7. A 0.5 kg ball is dropped from a height of 20 m. What is its velocity just before hitting the ground? (Assume g = 10 m/s², neglect air resistance)

A) 20 m/s

B) 15 m/s

C) 25 m/s

D) 30 m/s

8. A 2 kg object is lifted 5 m vertically. What is the work done by gravity? (g = 10 m/s²)

A) 50 J

B) -100 J

C) 100 J

D) -50 J

9. A 10 kg block slides down a frictionless incline of 30° over a distance of 4 m. What is the work done by the gravitational force? (g = 10 m/s²)

A) 100 J

B) 150 J

C) 200 J

D) 250 J

10. A spring with spring constant 200 N/m is compressed by 0.1 m. What is the potential energy stored in the spring?

A) 1 J

B) 2 J

C) 0.5 J

D) 1.5 J

11. A 5 kg object moves at 4 m/s. What is its kinetic energy?

A) 20 J

B) 30 J

C) 40 J

D) 50 J

12. A 1000 kg car accelerates from rest to 20 m/s in 5 s. What is the average power delivered by the engine?

A) 20 kW

B) 40 kW

C) 60 kW

D) 80 kW

13. A 2 kg ball is thrown upwards with an initial velocity of 10 m/s. What is the maximum height reached? (g = 10 m/s²)

A) 2.5 m

B) 3.5 m

C) 5 m

D) 7.5 m

14. A machine does 500 J of work in 10 s. What is its power output?

A) 50 W

B) 100 W

C) 500 W

D) 1000 W

15. A disc of radius 0.2 m rotates with an angular velocity of 10 rad/s. What is the linear speed of a point on its rim?

A) 1 m/s

B) 2 m/s

C) 3 m/s

D) 4 m/s

16. A 2 kg particle moves in a circular path of radius 0.5 m with a constant speed of 4 m/s. What is the centripetal force?

A) 8 N

B) 12 N

C) 16 N

D) 20 N

17. A uniform rod of length 2 m and mass 4 kg is rotated about an axis perpendicular to its length and passing through its center. What is its moment of inertia?

A) 1.33 kg·m²

B) 2 kg·m²

C) 2.67 kg·m²

D) 4 kg·m²

18. A wheel accelerates uniformly from rest to an angular velocity of 20 rad/s in 4 s. What is its angular acceleration?

A) 2 rad/s²

B) 3 rad/s²

C) 4 rad/s²

D) 5 rad/s²

19. A torque of 10 N·m is applied to a disc with a moment of inertia of 2 kg·m². What is the angular acceleration?

A) 2 rad/s²

B) 5 rad/s²

C) 7 rad/s²

D) 10 rad/s²

20. The center of mass of a system of two particles of masses 2 kg and 3 kg lies at the midpoint of the line joining them. If the distance between them is 4 m, what is the position of the center of mass from the 2 kg particle?

A) 1 m

B) 1.5 m

C) 2.4 m

D) 3 m

21. The gravitational force between two objects of masses 10 kg and 20 kg separated by 2 m is (G = 6.67 × 10⁻¹¹ N·m²/kg²):

A) 1.67 × 10⁻⁸ N

B) 3.34 × 10⁻⁸ N

C) 6.67 × 10⁻⁸ N

D) 1.34 × 10⁻⁷ N

22. What is the orbital velocity of a satellite at a height of 3600 km above the Earth’s surface? (R_E = 6400 km, g = 9.8 m/s²)

A) 5 km/s

B) 7.1 km/s

C) 8 km/s

D) 10 km/s

23. The escape velocity from the surface of a planet of radius 2000 km and mass 4 × 10²² kg is (G = 6.67 × 10⁻¹¹ N·m²/kg²):

A) 2 km/s

B) 3 km/s

C) 4 km/s

D) 5 km/s

24. The gravitational potential energy of a 2 kg object at a height of 10 km above the Earth’s surface (R_E = 6400 km, M_E = 6 × 10²⁴ kg, G = 6.67 × 10⁻¹¹ N·m²/kg²) is approximately:

A) -1.24 × 10⁸ J

B) -1.5 × 10⁸ J

C) -2 × 10⁸ J

D) -2.5 × 10⁸ J

25. The time period of a geostationary satellite is:

A) 12 hours

B) 18 hours

C) 20 hours

D) 24 hours

26. The ratio of the gravitational acceleration on the surface of two planets of equal mass but radii in the ratio 1:2 is:

A) 1:2

B) 4:1

C) 2:1

D) 1:4

27. A satellite is orbiting at a height equal to the radius of the Earth. The ratio of its orbital velocity to the escape velocity from the Earth’s surface is:

A) 1:1

B) 1:√2

C) 1:√2

D) √2:1

Test Results