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. In spherical waves, rays and wavefronts are related as:

2 / 30

2. The speed of sound in helium gas at STP is 965 m/s. If its density is , find the effective bulk modulus.

3 / 30

3. Why is polarization important in LCD technology?

4 / 30

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

5 / 30

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

6 / 30

6. A rectangular waveguide has . Calculate cutoff frequency of TE mode (take ).

7 / 30

7. What is a waveguide?

8 / 30

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

9 / 30

9. Which function is NOT a valid solution of the wave equation?

10 / 30

10. Why do optical instruments like spectrometers use diffraction gratings?

11 / 30

11. Which parameter of a wave represents the maximum displacement of a particle from its equilibrium position?

12 / 30

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

13 / 30

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

14 / 30

14. Which of the following is NOT an electromagnetic wave?

15 / 30

15. In refraction, how do rays and wavefronts behave when light enters from air to glass obliquely?

16 / 30

16. In a water wave at the surface of a pond, what type of motion do particles undergo?

17 / 30

17. Two waves with amplitudes 6 cm and 8 cm interfere destructively. What is the minimum possible resultant amplitude?

18 / 30

18. Why are surface seismic waves often most destructive during earthquakes?

19 / 30

19. The distance between two consecutive nodes in a standing wave is:

20 / 30

20. A source of frequency moves away from a stationary observer at . Speed of sound = . Find observed frequency.

21 / 30

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

22 / 30

22. The phase velocity of a wave is defined as:

23 / 30

23. Why is dispersion analysis important in spectroscopy of stars?

24 / 30

24. If two waves produce a beat frequency of 6 Hz, what is the beat period?

25 / 30

25. Which of the following can polarize light?

26 / 30

26. If the speed of sound in oxygen is 320 m/s and in hydrogen it is 1280 m/s, the ratio of their speeds is approximately:

27 / 30

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

28 / 30

28. The bulk modulus of air is and its density is . Find the speed of sound in air.

29 / 30

29. Light does not normally exhibit noticeable diffraction around everyday objects because:

30 / 30

30. Why does the resolution of a telescope depend on diffraction?

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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. A transverse wave on a rope has amplitude , wavelength , and frequency . What is its speed?

2 / 50

2. A 2 kHz sound wave travels in seawater with speed 1500 m/s. A 20 kHz wave travels at 1520 m/s. If both start together, how much time difference after 1 km?

3 / 50

3. A calcite crystal shows double images when placed over text. This phenomenon is due to:

4 / 50

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

5 / 50

5. 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.

6 / 50

6. A rectangular waveguide has . Calculate cutoff frequency of TE mode (take ).

7 / 50

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

8 / 50

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

9 / 50

9. Which application uses X-ray diffraction?

10 / 50

10. In the same medium (), what is the group velocity at ?

11 / 50

11. Which of the following is NOT a waveguide type?

12 / 50

12. A slit of width is used in a diffraction experiment with light of wavelength . Find angular width of central maximum.

13 / 50

13. What is a ray in wave physics?

14 / 50

14. A light ray strikes a plane mirror at an angle of with the normal. What is the angle of reflection?

15 / 50

15. A galaxy’s H-alpha line () is observed at . Estimate its recessional speed (non-relativistic).

16 / 50

16. Which of the following is a direct example of temporal dispersion?

17 / 50

17. In fiber-optic communication, why is polarization management important?

18 / 50

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

19 / 50

19. In Newton’s rings experiment, a dark spot at the center is observed because:

20 / 50

20. A wave on a stretched string has amplitude , frequency , and wavelength . What is the speed of the wave?

21 / 50

21. Why is polarization used in optical isolators in communication systems?

22 / 50

22. Why cannot transverse mechanical waves propagate in gases?

23 / 50

23. If a sound wave hits a rigid wall at incidence, what will be its angle of reflection?

24 / 50

24. Which everyday observation is a result of diffraction of sound waves?

25 / 50

25. What is wave polarization?

26 / 50

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

27 / 50

27. Optical fibers are considered what type of waveguide?

28 / 50

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

29 / 50

29. Which statement best explains why waves can transfer energy without transferring matter?

30 / 50

30. Which property is common to both mechanical and electromagnetic waves?

31 / 50

31. Seismic S-waves are:

32 / 50

32. Which property of diffraction gratings makes them better than prisms in spectroscopy?

33 / 50

33. If , what is the relationship between phase and group velocity?

34 / 50

34. If the frequency of light is doubled in a vacuum, what happens to its speed?

35 / 50

35. Which property of a wave determines its loudness or brightness?

36 / 50

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

37 / 50

37. In a pipe closed at one end, what kind of reflection occurs at the closed end for longitudinal sound waves?

38 / 50

38. A star (rest wavelength ) is observed at . Find its radial speed and sense of motion (non-relativistic).

39 / 50

39. For the same medium (), find phase velocity.

40 / 50

40. If two coherent sources of sound produce interference at a point, with path difference and wavelength , what is the nature of interference?

41 / 50

41. Temporal dispersion in optical fibers causes:

42 / 50

42. A police radar at records . Compute vehicle speed.

43 / 50

43. A microwave has wavelength . What is its frequency in vacuum?

44 / 50

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

45 / 50

45. The resolving power of an optical instrument is limited due to:

46 / 50

46. Which device in spectroscopy uses dispersion for wavelength separation?

47 / 50

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

48 / 50

48. For a dispersive medium with , find phase velocity at .

49 / 50

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

50 / 50

50. 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.

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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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Delen-Do

Love how you bring out the best in people through your incredible work

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Roshan

This is pure gold! So grateful you posted this 🌟

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Jodan JS

This message 💫 came at exactly right time for me. Your timing is always perfect. Thank you.

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