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

2 / 30

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

3 / 30

3. A train moves towards an observer at , blowing a whistle of . If speed of sound = , what frequency does observer hear?

4 / 30

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

5 / 30

5. In a longitudinal wave, how do the particles of the medium oscillate relative to the direction of wave propagation?

6 / 30

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

7 / 30

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

8 / 30

8. 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.

9 / 30

9. The speed of sound in water is about:

10 / 30

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

11 / 30

11. What determines the angular width of the central diffraction maximum in single-slit diffraction?

12 / 30

12. A radio station transmits waves at . What is the wavelength of these waves in air?

13 / 30

13. In water waves produced by dropping a stone into a pond, what kind of wavefronts are observed?

14 / 30

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

15 / 30

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

16 / 30

16. A dispersive medium has . Find group velocity at .

17 / 30

17. If the string length is , wave speed , what is fundamental frequency?

18 / 30

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

19 / 30

19. If a slit of width is illuminated with light of wavelength , find angular position of first minimum.

20 / 30

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

21 / 30

21. Why are waveguides not used for low-frequency signals?

22 / 30

22. In the wave equation, the term represents:

23 / 30

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

24 / 30

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

25 / 30

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

26 / 30

26. A circular waveguide has radius . Find cutoff wavelength for TE mode ().

27 / 30

27. The displacement of a progressive wave is given as . Find its wavelength.

28 / 30

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

29 / 30

29. What is a wave packet?

30 / 30

30. Beats are used in tuning musical instruments because:

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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 of the following is the correct order of sound speed in different media (approximate values)?

2 / 50

2. What does “mode” in a waveguide refer to?

3 / 50

3. The displacement of a progressive wave is given as . Find its wavelength.

4 / 50

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

5 / 50

5. A wave is given by . What are the values of wave number and angular frequency?

6 / 50

6. The central maximum in single-slit diffraction is:

7 / 50

7. Which application uses X-ray diffraction?

8 / 50

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

9 / 50

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

10 / 50

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

11 / 50

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

12 / 50

12. A radar transmits at 3 GHz. A car approaches at 30 m/s. What Doppler shift occurs? (Take ).

13 / 50

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

14 / 50

14. A plane wave strikes a flat surface at incidence. If law of reflection holds, what is the reflected angle?

15 / 50

15. A hall requires reverberation time of 1.5 s. If its volume is , find total absorption required using Sabine’s formula .

16 / 50

16. A sonometer wire of length has tension and linear density . Find its fundamental frequency.

17 / 50

17. A concave mirror has focal length . If an object is placed at , where is the image formed?

18 / 50

18. Constructive interference occurs when:

19 / 50

19. For a string of length fixed at both ends, what form of solution satisfies the boundary conditions?

20 / 50

20. A wave has linear polarization at to the x-axis, with amplitude . Find its components.

21 / 50

21. A wave has components , . What is the polarization?

22 / 50

22. If two waves with displacements and overlap, what is the resultant displacement?

23 / 50

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

24 / 50

24. A train whistle has frequency 500 Hz. If the train moves towards a stationary observer at speed 30 m/s (speed of sound = 330 m/s), what frequency is heard?

25 / 50

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

26 / 50

26. In ultrasound medical imaging, which property of sound is most important?

27 / 50

27. In a pipe with both ends open, reflection of longitudinal sound waves produces:

28 / 50

28. Two organ pipes produce 5 beats per second. If one has frequency 320 Hz, what is the possible frequency of the other pipe?

29 / 50

29. At what angle of incidence is reflected light completely polarized?

30 / 50

30. In the wave equation , what does the term represent?

31 / 50

31. A rectangular waveguide has dimension . Find cutoff wavelength for TE mode.

32 / 50

32. In the wave equation, the term represents:

33 / 50

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

34 / 50

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

35 / 50

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

36 / 50

36. A traffic radar operates at . The measured Doppler shift from a car is . Find the car’s speed (use ).

37 / 50

37. In wind instruments such as a flute, how are musical notes formed?

38 / 50

38. A wave has equation . Find its frequency and wavelength.

39 / 50

39. The expression for group velocity in terms of phase velocity is:

40 / 50

40. Two sound waves of amplitude 5 units each interfere destructively. What is the resultant amplitude?

41 / 50

41. 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.

42 / 50

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

43 / 50

43. For a point source in 2D, what is the relation between rays and wavefronts?

44 / 50

44. A circular waveguide of radius operates in TE mode. Find cutoff frequency (use , Bessel root, and ).

45 / 50

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

46 / 50

46. The fundamental relation between wave speed , frequency , and wavelength is:

47 / 50

47. If the distance between slits in YDS is , wavelength of light is , and screen distance is , find fringe width.

48 / 50

48. Which statement is correct about the speed of electromagnetic waves in vacuum?

49 / 50

49. Why does sound travel faster in solids than in liquids and gases?

50 / 50

50. In reflection from a plane mirror, how are incident and reflected rays related to the wavefront?

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Practice Waves MCQs
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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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