CBSE Class 11 Physics Sample Paper Set 2 — Free PDF
Comprehensive physics sample paper covering mechanics, thermodynamics, waves, and gravitation. Practice conceptual questions and numerical problems with co
TL;DR: Comprehensive physics sample paper covering mechanics, thermodynamics, waves, and gravitation. Practice conceptual questions and numerical problems wi…
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Comprehensive physics sample paper covering mechanics, thermodynamics, waves, and gravitation. Practice conceptual questions and numerical problems with complete solutions. This is a shortened practice set: 27 questions worth 68 marks, following the 70-mark CBSE paper pattern. Use it for timed practice, not as a full-length mock.
Board: CBSE · Class: Class 11 · Subject: Physics · Total: 68 marks · Time: 3 hours
Section A - Objective Type Questions — 8 marks
Attempt all questions. Each question carries 1 mark.
Q1. The SI unit of work is? (1 mark)
Answer: Joule (J)
Q2. What is the SI unit of moment of inertia? (1 mark)
Answer: kg*m^2
Q3. The gravitational constant G equals approximately? (1 mark)
Answer: 6.67 x 10^-11 N*m^2/kg^2
Q4. Simple harmonic motion can be represented by? (1 mark)
Answer: y = A sin(omega*t + phi)
Q5. The SI unit of angular momentum is? (1 mark)
Answer: kg*m^2/s
Q6. Youngs modulus is ratio of? (1 mark)
Answer: Stress to Strain
Q7. The speed of sound in air at 0C is approximately? (1 mark)
Answer: 330 m/s
Q8. Which of the following is not a type of simple harmonic motion? (1 mark)
Answer: Uniformly accelerated motion
Section B - Short Answer Questions — 27 marks
Attempt all questions. Each question carries 2 or 3 marks.
Q1. State law of conservation of momentum and derive it from Newtons laws. (2 marks)
Answer: Total momentum of isolated system remains constant, F = dp/dt = 0, so p = constant
Q2. Explain the concept of angular displacement and angular velocity. (2 marks)
Answer: Angular displacement: angle swept, Angular velocity: rate of change of angular displacement
Q3. What is torque? Write its expression and explain its physical meaning. (3 marks)
Answer: Tau = r x F, Tendency to produce rotation, Vector product of position and force
Q4. Explain the difference between elastic and inelastic collisions. (2 marks)
Answer: Elastic: KE conserved, Inelastic: KE not conserved, In both momentum is conserved
Q5. What is escape velocity? Derive its expression. (3 marks)
Answer: Minimum velocity to escape gravitational field, v_escape = sqrt(2GM/R)
Q6. Explain simple harmonic motion and write its characteristics. (2 marks)
Answer: Oscillatory motion about equilibrium, Acceleration proportional to displacement and opposite direction
Q7. Derive expression for time period of simple pendulum. (2 marks)
Answer: T = 2pi*sqrt(L/g) where L is length, g is gravitational acceleration
Q8. What is Hookes law? Write its mathematical form. (2 marks)
Answer: F = -kx where k is spring constant, x is displacement
Q9. Explain the process of wave formation and types of waves. (3 marks)
Answer: Disturbance propagates through medium, Transverse: perpendicular to motion, Longitudinal: parallel to motion
Q10. What is Doppler effect? Write its expression for moving observer. (2 marks)
Answer: Apparent frequency changes due to relative motion, f' = f(v + v_observer)/(v + v_source)
Q11. Explain the concept of thermal equilibrium and temperature. (2 marks)
Answer: Thermal equilibrium: no heat flow between bodies, Temperature: measure of average kinetic energy
Q12. State first law of thermodynamics and write its expression. (2 marks)
Answer: dQ = dU + dW, Heat absorbed equals change in internal energy plus work done
Section C - Long Answer Questions — 33 marks
Attempt all questions. Each question carries 4 or 5 marks.
Q1. Explain the concept of work-energy theorem. Derive and prove it. (5 marks)
Answer: Work done by net force equals change in kinetic energy, W_net = delta-KE, Derived from F = ma and kinematics
Q2. Explain rotational motion and derive equation for rotational kinetic energy. (5 marks)
Answer: Motion about axis, I = mr^2, KE_rot = (1/2)*I*omega^2, Analogous to linear motion
Q3. Describe the motion of charged particle in uniform electric and magnetic fields. (5 marks)
Answer: In E field: F = qE, Linear motion, In B field: Lorentz force, Circular motion with radius r = mv/(qB)
Q4. Explain Keplers laws of planetary motion with physical interpretation. (5 marks)
Answer: First: elliptical orbit, Second: equal areas in equal time, Third: T^2 proportional to a^3
Q5. Describe the phenomenon of resonance. Explain its conditions and applications. (5 marks)
Answer: Amplitude maximum when driving frequency equals natural frequency, Conditions: damping is low, Resonance frequency = omega_0
Q6. Explain the concept of entropy and second law of thermodynamics. (4 marks)
Answer: Entropy: measure of disorder, Second law: entropy of isolated system always increases
Q7. Describe the variation of g with altitude and depth. Derive expressions. (4 marks)
Answer: g_h = g(1 - 2h/R) at height h, g_d = g(1 - d/R) at depth d
FAQs
What are the important chapters in Class 11 Physics?
Motion, Forces, Energy, Gravitation, Oscillations, Waves, and Thermodynamics are fundamental chapters.
What is the exam pattern?
70 marks with 3 hours duration, covering MCQ, short answer questions, and long answer problems.
How to solve numerical problems effectively?
Read carefully, identify given values, choose relevant formula, substitute correctly, check units, and verify answer.
All sample papers → · Previous-year questions → · Chapter-wise MCQs →