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. Why is polarization analysis important in optics and communication?

2 / 30

2. Why does a guitar string produce different pitches when pressed at different frets?

3 / 30

3. What are standing waves?

4 / 30

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

5 / 30

5. The relation between speed , frequency , and wavelength of a wave is:

6 / 30

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

7 / 30

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

8 / 30

8. A pipe open at both ends has length . If the speed of sound in air is , calculate its fundamental frequency.

9 / 30

9. What is spatial dispersion?

10 / 30

10. For a rectangular waveguide with , find cutoff wavelength of dominant TE mode.

11 / 30

11. A pulse has . Estimate spatial width .

12 / 30

12. A wave has equation . Find its frequency.

13 / 30

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

14 / 30

14. If the beat period is 0.25 s, what is the beat frequency?

15 / 30

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

16 / 30

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

17 / 30

17. Why are polarizers used in cameras and sunglasses?

18 / 30

18. A stretched string obeys the wave equation. If displacement is given by , what relation must hold between , , and ?

19 / 30

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

20 / 30

20. Which of the following is NOT an application of Doppler effect?

21 / 30

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

22 / 30

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

23 / 30

23. The speed of sound in a medium is given by which formula?

24 / 30

24. A wave has and . What is the polarization angle with x-axis?

25 / 30

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

26 / 30

26. What does wavelength physically represent in a wave?

27 / 30

27. Which principle is used to detect faults in musical tuning during orchestra practice?

28 / 30

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

29 / 30

29. A longitudinal sound wave strikes a rigid wall. What happens to compressions and rarefactions on reflection?

30 / 30

30. If beat frequency is 10 Hz, what is the time between two successive maxima?

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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. In which medium is the speed of sound least?

2 / 50

2. Which of the following pairs is correct for phase change upon reflection?

3 / 50

3. Which property of the medium allows transverse waves to exist?

4 / 50

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

5 / 50

5. What happens when two or more waves overlap in a non-linear medium?

6 / 50

6. A sound wave hits a wall at incidence. What is its reflection angle?

7 / 50

7. Which of the following is an example of a mechanical wave?

8 / 50

8. An EM wave has horizontal and vertical components: , . What is the polarization of the wave?

9 / 50

9. The minimum distance required to hear an echo at room temperature (speed of sound = 343 m/s) is approximately:

10 / 50

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

11 / 50

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

12 / 50

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

13 / 50

13. If a wave has phase velocity and group velocity , what does this signify?

14 / 50

14. A wave solution is given as . Which direction is the wave moving?

15 / 50

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

16 / 50

16. For a rectangular waveguide with , find cutoff wavelength of dominant TE mode.

17 / 50

17. What is the main idea of Fourier analysis in wave physics?

18 / 50

18. In YDS experiment, the condition for dark fringes is:

19 / 50

19. In glass, refractive index for violet = 1.54 and for red = 1.50. If speed of light in vacuum = , find speed of red and violet inside glass.

20 / 50

20. Elliptical polarization is:

21 / 50

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

22 / 50

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

23 / 50

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

24 / 50

24. Which of the following is NOT an application of Doppler effect?

25 / 50

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

26 / 50

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

27 / 50

27. A wave has two perpendicular components of equal amplitude, but one lags behind the other by . What type of polarization results?

28 / 50

28. A pulse with frequency spread has temporal width . Estimate .

29 / 50

29. A wave on a string has equation . Find its wavelength.

30 / 50

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

31 / 50

31. Temporal dispersion in optical fibers causes:

32 / 50

32. Two tuning forks of frequencies 512 Hz and 516 Hz are sounded together. The observer hears 4 beats per second. If 512 Hz fork is loaded and beats reduce to 2 per second, what is new frequency of loaded fork?

33 / 50

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

34 / 50

34. In optical fiber communication, polarization-maintaining fibers are designed to:

35 / 50

35. A ray of light strikes a plane mirror at an angle of with the mirror surface. Find the angle of reflection.

36 / 50

36. Beats are used in tuning musical instruments because:

37 / 50

37. A weather radar at measures radial wind via Doppler shift. For wind towards the radar at , find (use backscatter formula ).

38 / 50

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

39 / 50

39. The condition for constructive interference in terms of path difference is:

40 / 50

40. What is temporal dispersion?

41 / 50

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

42 / 50

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

43 / 50

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

44 / 50

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

45 / 50

45. Why is dispersion important in wave physics?

46 / 50

46. A circular waveguide has radius . Find cutoff frequency of TE mode (use ).

47 / 50

47. For the same medium , find phase velocity at .

48 / 50

48. If speed of sound in air is 330 m/s and in water is 1500 m/s, what is ratio of their speeds?

49 / 50

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

50 / 50

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

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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

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