Class 11 Physics: Waves Online Test | Exam Bashed Mock Test
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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 closed organ pipe resonates in its fundamental mode at 200 Hz. If speed of sound is , find the length of the pipe.

2 / 30

2. What happens if a wave is operated below its cutoff frequency in a waveguide?

3 / 30

3. A source of frequency approaches a stationary observer at . Speed of sound = . Find observed frequency.

4 / 30

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

5 / 30

5. A car moving at 25 m/s towards a stationary observer blows horn at 500 Hz. Speed of sound = 340 m/s. What frequency does observer hear?

6 / 30

6. Which application uses X-ray diffraction?

7 / 30

7. A beam of unpolarized light passes through two polarizers at to each other. Find the transmitted intensity relative to the incident intensity .

8 / 30

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

9 / 30

9. For a wave: , . Find the type of polarization.

10 / 30

10. The speed of sound in air at room temperature is approximately:

11 / 30

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

12 / 30

12. In a pipe open at both ends, what type of reflection occurs at the ends?

13 / 30

13. A wave is represented as . What is its frequency?

14 / 30

14. If both source and observer move towards each other, the observed frequency will be:

15 / 30

15. Which type of wave can travel in a vacuum?

16 / 30

16. If the wavelength of a sound wave in air is and the speed of sound is , what is its frequency?

17 / 30

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

18 / 30

18. Which of the following applications relies on diffraction?

19 / 30

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

20 / 30

20. Destructive interference occurs when:

21 / 30

21. If two sound sources produce beats with period 0.2 s, how many beats are heard in 2 seconds?

22 / 30

22. Why is dispersion important in wave physics?

23 / 30

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

24 / 30

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

25 / 30

25. What does the superposition principle state about waves?

26 / 30

26. A progressive wave is described as:

27 / 30

27. Which of the following is the best example of a longitudinal wave?

28 / 30

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

29 / 30

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

30 / 30

30. When a sound source moves towards a stationary observer, what happens to the observed frequency?

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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 string is vibrating in a transverse mode with frequency and wavelength . Find the wave speed.

2 / 50

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

3 / 50

3. Which of the following wave equations represents a wave traveling in the –x direction?

4 / 50

4. When white light enters a glass prism, which color bends the least?

5 / 50

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

6 / 50

6. A light ray is incident at with the normal. What is the reflection angle?

7 / 50

7. Which of the following applications relies on diffraction?

8 / 50

8. In Young’s double-slit experiment (YDS), bright fringes appear because of:

9 / 50

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

10 / 50

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

11 / 50

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

12 / 50

12. Which mode is commonly used in rectangular waveguides for microwave transmission?

13 / 50

13. The speed of sound in water is about:

14 / 50

14. A police radar measures vehicle speed by:

15 / 50

15. In water, density is , bulk modulus . Find speed of sound.

16 / 50

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

17 / 50

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

18 / 50

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

19 / 50

19. Which function is a solution of the one-dimensional wave equation?

20 / 50

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

21 / 50

21. A wave has wavelength and speed . Find its frequency.

22 / 50

22. A sound wave in air has frequency and speed . Find its wavelength.

23 / 50

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

24 / 50

24. In medical Doppler imaging, why is ultrasound (instead of audible sound) used?

25 / 50

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

26 / 50

26. A stationary observer hears a whistle of frequency from a train moving towards him at . Speed of sound is . Find the observed frequency.

27 / 50

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

28 / 50

28. If the frequency of a wave is doubled but speed remains constant, what happens to its wavelength?

29 / 50

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

30 / 50

30. Which of the following is an example of spatial dispersion?

31 / 50

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

32 / 50

32. Two waves have amplitudes 4 cm and 6 cm, and are exactly in phase. What is the resultant amplitude when they overlap?

33 / 50

33. A medium has dispersion relation (water waves, deep). Find group velocity in terms of .

34 / 50

34. Two waves of amplitude 4 cm and 5 cm interfere constructively. What is maximum possible resultant amplitude?

35 / 50

35. Which of the following properties does NOT change when a sound wave travels from air into water?

36 / 50

36. A dispersive medium has . Find group velocity.

37 / 50

37. A wave is described by . Find wave speed.

38 / 50

38. If rays from a distant source are nearly parallel, the corresponding wavefront is:

39 / 50

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

40 / 50

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

41 / 50

41. The H-alpha line () from a galaxy receding at . Find observed wavelength (non-relativistic).

42 / 50

42. The wave equation is of which type?

43 / 50

43. A radar at measures for a car moving at angle to the radar beam. Find true speed (use ).

44 / 50

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

45 / 50

45. In optical fibers, what type of dispersion causes broadening due to different wavelengths traveling at different speeds?

46 / 50

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

47 / 50

47. In optical fibers, why is light confined within the core?

48 / 50

48. The condition for destructive interference in terms of path difference is:

49 / 50

49. If the time period of a wave is 0.02 s, what is its frequency?

50 / 50

50. A sound wave of frequency 200 Hz travels in air with speed 340 m/s. Find its wavelength.

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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

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Jodan JS

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