11th Physics Quarterly Exam Model question paper - 2025 - 2026 Pdf 👇🏻👇🏻👇🏻

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11th Physics Quarterly Exam Model Question Paper (2025–2026)

Subject: Physics

Medium: English

Total Marks: 70

Duration: 3 Hours

• Read all questions carefully. • Show necessary steps and units. • Answers must be neat and legible.

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Jump to: Part I Part II Part III Part IV

Part I: Multiple Choice Questions

Answer all questions. (15 × 1 = 15 Marks)

1. The number of significant digits in 0.0006032 is:
   8

   7

   4

   2
2. If an object is thrown vertically upwards, its velocity at the maximum height is:
   Maximum

   Constant

   Zero

   Minimum
3. The moment of inertia of a thin rod of mass M and length L about an axis passing through its center and perpendicular to its length is:
   ML²/3

   ML²/12

   ML²/2

   ML²
4. If the force, displacement, and angle are given, the work done is calculated by:
   W = F s cos(θ)

   W = F s sin(θ)

   W = F/s

   W = s/F
5. The principle "every action has an equal and opposite reaction" is Newton's:
   First Law

   Second Law

   Third Law

   Law of Gravitation
6. The escape speed on Earth is:
   9.8 m/s

   11.2 km/s

   1.625 m/s²

   6.674 × 10⁻¹¹ N m² kg⁻²
7. Which of the following physical quantities has the dimensional formula [ML⁻¹T⁻²]?
   Force

   Work

   Pressure

   Power
8. A particle is moving in a circular path of radius r with uniform speed v. The centripetal acceleration is:
   v²/r

   v r

   v/r

   v² r
9. The value of gravitational constant G is:
   9.8 m/s²

   6.674 × 10⁻¹¹ N m² kg⁻²

   6.022 × 10²³

   1.38 × 10⁻²³ J/K
10. A body is in equilibrium when its:
    Linear momentum is zero

    Acceleration is uniform

    Net external force is zero

    Velocity is zero
11. Which law is also known as the law of inertia?
    Newton's first law

    Newton's second law

    Newton's third law

    Law of conservation of energy
12. The product of force and time is known as:
    Work

    Power

    Impulse

    Momentum
13. The angular speed of a flywheel making 120 revolutions/minute is:
    2π rad/s

    4π rad/s

    π rad/s

    4π² rad/s
14. If the kinetic energy of a body is doubled, its momentum will be:
    Doubled

    Halved

    Increased by √2 times

    Unchanged
15. What happens to the gravitational force between two masses if the distance between them is doubled?
    It becomes four times

    It becomes half

    It becomes one-fourth

    It is doubled

Part II: Short Answer Questions

Answer any 6 of the following questions. Question No. 22 is compulsory. (6 × 2 = 12 Marks)

16. Define significant figures.
17. State the triangle law of vector addition.
18. What is centripetal force?
19. State the work-energy theorem.
20. Define the center of mass.
21. State Kepler's law of periods.
22. A car moving on a straight road with a speed of 120 km/h is brought to rest by applying brakes. The car covers a distance of 100 m before it stops. Calculate the average retardation of the car.
23. What is an elastic collision?

Part III: Short Answer Questions

Answer any 6 of the following questions. Question No. 31 is compulsory. (6 × 3 = 18 Marks)

24. Write a short note on the triangulation method for height measurement.
25. Derive the equation of motion for a particle under constant acceleration: v = u + a t.
26. State and explain the principle of conservation of linear momentum.
27. What are the different types of potential energy? Explain with examples.
28. State the parallel axes theorem and perpendicular axes theorem.
29. Derive the expression for orbital velocity.
30. List the applications of dimensional analysis.
31. A solid sphere of mass 20 kg and radius 0.25 m rotates about its axis with an angular speed of 100 rad/s. Calculate the kinetic energy of rotation.
32. What are geostationary and polar satellites?

Part IV: Long Answer Questions

Answer all the questions. (5 × 5 = 25 Marks)

33. a) Explain the different types of errors and how they can be minimized.

    OR

    b) State and prove the law of conservation of angular momentum.
34. a) Derive the equations of uniformly accelerated motion by the calculus method.

    OR

    b) Explain the methods of angle of friction and angle of repose.
35. a) State and prove the work-energy theorem. Discuss its applications.

    OR

    b) What is an inelastic collision? Show that there is always a loss of kinetic energy in an inelastic collision.
36. a) Derive the expression for the moment of inertia of a uniform rod about an axis passing through its center of mass and perpendicular to the rod.

    OR

    b) State and explain Kepler's three laws of planetary motion.
37. a) Derive the expression for the variation of 'g' with altitude and depth.

    OR

    b) Explain projectile motion and derive the expressions for the time of flight and maximum height reached by a projectile.

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