Class 11 Physics: Waves Online Test | Exam Bashed Mock Test

Class 11 Physics — Chapter 15: Waves Online Test

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Class 11 Physics: Waves Online Test (Paper 1)

Welcome to Paper 1! This is your foundation to build confidence and get you ready to tackle the challenges ahead.

  • Total Questions: 20
  • Time Allotted: 30 minutes
  • Passing Score: 40%
  • Randomization: No
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 20

1. A wave packet has a central wavelength and wave speed . Find the central frequency.

2 / 20

2. A diffraction grating gives first-order maximum at angle for light of wavelength 600 nm. Find grating spacing .

3 / 20

3. A closed organ pipe of length resonates with sound speed . What are first three harmonics?

4 / 20

4. In the case of a point source emitting waves, the wavefronts are:

5 / 20

5. Why is polarization important in LCD technology?

6 / 20

6. A wave has frequency and wavelength . What is its speed?

7 / 20

7. A wave strikes a barrier at incidence. What is the reflection angle?

8 / 20

8. A tuning fork of 512 Hz produces 6 beats per second with another fork. What are the possible frequencies of the second fork?

9 / 20

9. A string wave has speed and frequency . Find its wavelength.

10 / 20

10. A sound wave in water has speed and frequency . Find its wavelength.

11 / 20

11. A longitudinal wave is produced in a medium with density , speed , displacement amplitude , and angular frequency . Find the pressure amplitude.

12 / 20

12. A progressive wave is expressed as . Find its speed.

13 / 20

13. In a steel rod, Young’s modulus is , and density is . Find speed of longitudinal waves.

14 / 20

14. An aluminum rod has density and Young’s modulus . Find wave speed.

15 / 20

15. An electromagnetic wave has frequency . What is its wavelength in vacuum?

16 / 20

16. A string wave is given by . What is its frequency?

17 / 20

17. In spatial dispersion, what determines the angular separation of different colors in a prism?

18 / 20

18. A rectangular waveguide has dimensions . Find cutoff frequency of dominant mode TE (take ).

19 / 20

19. For a rectangular waveguide of dimensions , compute cutoff frequency of TE mode.

20 / 20

20. A plane-polarized light of intensity passes through an analyzer at to the plane of polarization. Find transmitted intensity.

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Class 11 Physics: Waves Online Test (Paper 2)

Welcome to Paper 2! You’ve mastered the basics, and now it’s time to test your understanding with a more challenging set of questions.

Get new questions on each attempt

  • Total Questions: 30
  • Time Allotted: 45 minutes
  • Passing Score: 50%
  • Randomization: Yes
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 30

1. A water wave has a wavelength of and frequency of . What is the speed of the wave?

2 / 30

2. A string of length is fixed at both ends and vibrates in its fundamental mode. If wave speed is , find frequency.

3 / 30

3. A rectangular waveguide has dimensions . Find cutoff frequency of TE mode.

4 / 30

4. A Doppler radar emits frequency . A car approaches at . Speed of EM wave = . Find observed frequency shift.

5 / 30

5. A transverse wave is represented as . If reflected at a free end, what is the reflected equation?

6 / 30

6. When a transverse wave pulse on a string is reflected at a fixed end, what happens to the reflected pulse?

7 / 30

7. Which principle mathematically relates rays and wavefronts in geometrical optics?

8 / 30

8. The pleasant quality of music compared to noise is due to:

9 / 30

9. If the density of a medium increases but elasticity remains the same, what happens to wave speed?

10 / 30

10. Why is dispersion important in spectroscopy?

11 / 30

11. In a Young’s double-slit experiment, slits are separated by 0.25 mm and screen is 1.0 m away. Light of 600 nm is used. Find fringe width.

12 / 30

12. Two waves are given as and . Find resultant amplitude.

13 / 30

13. How do geologists use seismic wave reflections and refractions?

14 / 30

14. Which color of visible light undergoes maximum dispersion in a prism?

15 / 30

15. A light pulse at 1550 nm wavelength travels in an optical fiber where group velocity dispersion = . For a spectral width of 2 nm over 50 km, find temporal broadening.

16 / 30

16. If two waves of amplitude interfere and produce beats, what is the maximum possible amplitude of the resultant wave?

17 / 30

17. If the speed of sound in steel is 5000 m/s, and density of steel is 7850 kg/m³, find the effective Young’s modulus.

18 / 30

18. What is the most common cross-sectional shape of a microwave waveguide?

19 / 30

19. If a wave is described by , what is its frequency?

20 / 30

20. A non-dispersive wave has the property that:

21 / 30

21. A Gaussian wave packet has central frequency and bandwidth . What is minimum time duration?

22 / 30

22. What is a ray in wave physics?

23 / 30

23. A progressive wave is described as:

24 / 30

24. In a rectangular waveguide, what do TE and TM modes stand for?

25 / 30

25. An open pipe resonates at fundamental frequency of 170 Hz. If speed of sound = 340 m/s, what is pipe length?

26 / 30

26. A microwave has frequency . Find its wavelength in vacuum.

27 / 30

27. A wave in a string has equation . What is the wavelength?

28 / 30

28. Why does a prism produce a continuous spectrum when white light passes through it?

29 / 30

29. A parallel beam of light passes through a convex lens of focal length . Where will the rays converge?

30 / 30

30. A tuning fork of frequency resonates with a closed organ pipe. If the length of air column is , calculate the speed of sound.

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Class 11 Physics: Waves Online Test (Paper 3)

Welcome to Paper 3! You’ve warmed up—now it's time to step up your game and conquer the challenge with tougher questions!

Earn a certificate upon passing

Get new questions with every attempt

  • Total Questions: 50
  • Time Allotted: 75 minutes
  • Passing Score: 70%
  • Randomization: Yes
  • Certificate: Yes
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 50

1. Which communication problem arises mainly due to temporal dispersion?

2 / 50

2. Two instruments play together at frequencies 440 Hz and 445 Hz. How often will the loudness of sound increase per second?

3 / 50

3. A wave has and . Find the polarization.

4 / 50

4. Which of the following is a practical application of waveguide design?

5 / 50

5. Why does diffraction occur more easily with sound waves than with light waves?

6 / 50

6. A light pulse at 1550 nm wavelength travels in an optical fiber where group velocity dispersion = . For a spectral width of 2 nm over 50 km, find temporal broadening.

7 / 50

7. A tuning fork of frequency resonates with a closed organ pipe. If the length of air column is , calculate the speed of sound.

8 / 50

8. A progressive wave is expressed as . Find its speed.

9 / 50

9. The apparent redshift of light from distant galaxies is explained by which effect?

10 / 50

10. A rectangular waveguide has dimensions . Find cutoff frequency of dominant mode TE (take ).

11 / 50

11. Which term in the wave equation represents the amplitude?

12 / 50

12. Why is polarization important in LCD technology?

13 / 50

13. In a plane progressive wave, the wavefront is:

14 / 50

14. Constructive interference occurs when:

15 / 50

15. Which of the following is NOT a property of a wave?

16 / 50

16. Which of the following is an example of an electromagnetic wave?

17 / 50

17. A circularly polarized wave has frequency . What is its period of field rotation?

18 / 50

18. A square wave of frequency is decomposed into Fourier components. Which harmonics are present?

19 / 50

19. A diffraction grating gives first-order maximum at angle for light of wavelength 600 nm. Find grating spacing .

20 / 50

20. The general solution of the wave equation is written as:

21 / 50

21. If two sound waves of equal amplitude overlap and interfere constructively, how does intensity change?

22 / 50

22. A wave pulse traveling along a string is reflected from a fixed end. What happens to the reflected pulse?

23 / 50

23. Which mathematical form represents the one-dimensional wave equation?

24 / 50

24. A 2 m long string is fixed at both ends. If speed of wave on string is 200 m/s, find frequency of second harmonic.

25 / 50

25. What is spatial dispersion?

26 / 50

26. A waveguide is a structure designed to:

27 / 50

27. A wave has a frequency of and a wavelength of . What is its speed?

28 / 50

28. A pulse in a dispersive medium has . Estimate temporal width of the pulse.

29 / 50

29. Which principle explains the formation and propagation of wavefronts?

30 / 50

30. Which of the following devices uses waveguides in microwave engineering?

31 / 50

31. A sound wave in a medium has speed and frequency . Find its wavelength.

32 / 50

32. If unpolarized light is incident on a polarizer, followed by another polarizer rotated at , what fraction of original intensity is transmitted?

33 / 50

33. In mechanical waves, the particles of the medium oscillate due to:

34 / 50

34. In a rectangular waveguide, what do TE and TM modes stand for?

35 / 50

35. The speed of sound in hydrogen at STP is approximately:

36 / 50

36. Which of the following is true for circular polarization?

37 / 50

37. Which seismic waves are longitudinal in nature?

38 / 50

38. Which of the following is a direct application of diffraction and Huygens’ principle?

39 / 50

39. The group velocity of a wave packet is defined as:

40 / 50

40. A light ray strikes a mirror at with the surface. What is the angle of incidence with respect to the normal?

41 / 50

41. A string fixed at both ends has its third harmonic frequency at 150 Hz. What is fundamental frequency?

42 / 50

42. A transverse wave travels along a string with frequency 20 Hz and wavelength 0.5 m. A longitudinal sound wave of same frequency is produced in air with speed 340 m/s. What is its wavelength?

43 / 50

43. Calculate the speed of sound in air at pressure , density , and .

44 / 50

44. A pulse has . Estimate spatial width .

45 / 50

45. When a transverse wave pulse on a string is reflected at a free end, what happens to the reflected pulse?

46 / 50

46. Elliptical polarization is:

47 / 50

47. A wave has wavelength and time period . Find its speed.

48 / 50

48. In fiber optics, why must diffraction be minimized?

49 / 50

49. If the time period of a wave is , what is its frequency?

50 / 50

50. A star emits light at . It is receding at . Estimate observed frequency (non-relativistic).

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Class 11 Physics — Chapter 15: Waves Online Test

The Waves Online Test for Class 11 Physics helps students understand one of the most fascinating and high-scoring chapters in mechanics — the study of wave motion. Waves are everywhere: in sound, light, and even earthquakes. This chapter teaches how energy travels without transferring matter, and this MCQ-based online test ensures you grasp these core ideas through practical, exam-style questions.

The test is based on the NCERT Class 11 Physics Chapter 15 — Waves and follows the latest CBSE pattern. It includes multiple-choice questions from every key topic such as transverse and longitudinal waves, speed of sound, Doppler effect, superposition, beats, and stationary waves. Each paper is auto-evaluated and provides instant results with answer review, helping you analyze your performance and strengthen weak areas.

The Waves Online Test helps you connect classroom theory with real-world applications like the production of sound, resonance in musical instruments, and Doppler effect in astronomy. Each question is created to improve your understanding of formulas and physical interpretation. After each attempt, you can review your score, correct answers, and retake the paper for better performance.

About this Online Test

The Chapter 15 — Waves Online Test consists of three difficulty-based papers. Each paper tests your conceptual depth and numerical accuracy progressively.

  • Paper 1 — Concept Foundation: 20 questions · 30 min · Pass ≥ 40%
  • Paper 2 — Mixed Practice: 30 questions · 45 min · Pass ≥ 50% · Random new questions each attempt
  • Paper 3 — Advanced Challenge: 50 questions · 75 min · Pass ≥ 70% · Certificate available on passing

Papers 2 and 3 refresh with new question sets every time you retake them, while Paper 1 remains fixed for concept review. All tests include automatic grading, time tracking, and complete answer explanations after submission.

Key Topics Covered (Waves)

  • Introduction to wave motion
  • Transverse and longitudinal waves
  • Displacement, amplitude, frequency, and wavelength
  • Speed of wave on a stretched string
  • Principle of superposition of waves
  • Beats and interference
  • Stationary (standing) waves
  • Resonance and natural frequency
  • Doppler effect and its real-life applications

Why You Should Take This Test

Waves is one of the most conceptually rich and formula-based chapters. This online test helps you practice a variety of questions that reinforce your theoretical and mathematical understanding. It helps you:

  • Revise all formulas related to wave speed, frequency, and wavelength
  • Understand wave superposition and resonance clearly
  • Improve accuracy with conceptual and numerical MCQs
  • Get instant score and answer analysis after submission
  • Boost your confidence for both board exams and JEE/NEET Physics

Who Should Attempt This Test

  • CBSE/NCERT Class 11 students preparing for Physics exams
  • JEE and NEET aspirants aiming to master mechanics and sound wave topics
  • Students wanting conceptual clarity in standing waves and Doppler effect
  • Teachers looking for ready-to-use online MCQ tests for practice

Preparation Tips for Chapter 15 — Waves

  • Revise the wave equation and understand how displacement varies with time and position.
  • Memorize key relations: v = fλ and v = √(T/μ) for waves on a string.
  • Practice numericals on beats, stationary waves, and Doppler shift.
  • Study the phase difference and nodes–antinodes formation clearly.
  • Attempt Paper 1 for formula check, Paper 2 for mixed concepts, and Paper 3 for full exam simulation.

Before You Start

  • Use updated Chrome or Edge browser for a smooth test experience.
  • Ensure a stable internet connection during the test.
  • Do not refresh or close the browser tab while attempting.

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