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. In a rectangular waveguide, which is the dominant mode?

2 / 30

2. A concave mirror produces which type of wavefront when a parallel beam is incident on it?

3 / 30

3. Which of the following best explains why electromagnetic waves can travel through space?

4 / 30

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

5 / 30

5. A diffraction grating gives second-order maximum at angle for wavelength 600 nm. Find grating spacing .

6 / 30

6. The Doppler effect refers to:

7 / 30

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

8 / 30

8. A pipe closed at one end has length . If speed of sound = , find fundamental frequency.

9 / 30

9. Which of the following is the general differential equation of a wave motion in one dimension?

10 / 30

10. In reflection of waves from a plane surface:

11 / 30

11. Which type of dispersion occurs in multimode fibers because different propagation paths have different lengths?

12 / 30

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

13 / 30

13. Why is polarization important in LCD technology?

14 / 30

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

15 / 30

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

16 / 30

16. A light pulse at wavelength travels through fiber with dispersion coefficient . For over 50 km, calculate pulse broadening.

17 / 30

17. The time period of a wave is . What is its frequency?

18 / 30

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

19 / 30

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

20 / 30

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

21 / 30

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

22 / 30

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

23 / 30

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

24 / 30

24. Holography is an application of:

25 / 30

25. Which of the following is NOT a fundamental characteristic of a wave?

26 / 30

26. Which type of wave shows compressions and rarefactions?

27 / 30

27. Which optical device uses birefringence to control polarization states?

28 / 30

28. Diffraction is more pronounced when:

29 / 30

29. A tuning fork of frequency 340 Hz is struck along with another producing 8 beats per second. Find possible frequencies of the second tuning fork.

30 / 30

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

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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 sound wave travels in air with speed . If its frequency is , what is its wavelength?

2 / 50

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

3 / 50

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

4 / 50

4. What is a wave packet?

5 / 50

5. Malus’ law states that:

6 / 50

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

7 / 50

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

8 / 50

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

9 / 50

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

10 / 50

10. Huygens’ principle states that:

11 / 50

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

12 / 50

12. Which of the following electromagnetic waves has the shortest wavelength?

13 / 50

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

14 / 50

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

15 / 50

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

16 / 50

16. In linear polarization, how does the electric field vector behave?

17 / 50

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

18 / 50

18. A tuning fork of 512 Hz produces resonance in an air column of length 16.5 cm closed at one end. Find speed of sound in air.

19 / 50

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

20 / 50

20. Two tuning forks have frequencies 256 Hz and 260 Hz. What is the beat frequency produced?

21 / 50

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

22 / 50

22. Why does violet light deviate more than red light in a prism?

23 / 50

23. What is wave polarization?

24 / 50

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

25 / 50

25. Why do string instruments like guitar and violin produce standing waves?

26 / 50

26. What happens to the speed of a wave on a string if tension is quadrupled while mass per unit length remains the same?

27 / 50

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

28 / 50

28. What is a waveguide?

29 / 50

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

30 / 50

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

31 / 50

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

32 / 50

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

33 / 50

33. The observed frequency is lower than the source frequency when:

34 / 50

34. A wave has equation . Find its frequency.

35 / 50

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

36 / 50

36. If two sound waves of the same frequency but opposite phase and equal amplitude overlap, what is heard?

37 / 50

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

38 / 50

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

39 / 50

39. Which optical device uses birefringence to control polarization states?

40 / 50

40. Which of the following is NOT a characteristic of beats?

41 / 50

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

42 / 50

42. An EM wave has , . What is the polarization?

43 / 50

43. In a standing wave, what are antinodes?

44 / 50

44. Which optical device uses polarization to reduce glare from surfaces like water and glass?

45 / 50

45. A light beam with wavelengths 400 nm and 700 nm enters a prism (refractive indices: ). If prism angle = , calculate angular separation between two colors.

46 / 50

46. In tabla or drums, why do membranes produce distinct musical sounds?

47 / 50

47. Seismic S-waves are:

48 / 50

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

49 / 50

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

50 / 50

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

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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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Roshan

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Jodan JS

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