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. The wave equation is of which type?

2 / 30

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

3 / 30

3. Malus’ law states that:

4 / 30

4. What is the advantage of graded-index fibers in communication systems?

5 / 30

5. 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?

6 / 30

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

7 / 30

7. 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.

8 / 30

8. Which type of wave shows compressions and rarefactions?

9 / 30

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

10 / 30

10. Why is polarization important in wireless communication using antennas?

11 / 30

11. A beam of unpolarized light of intensity passes through a polarizer. What is the intensity of transmitted light?

12 / 30

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

13 / 30

13. A wave equation is given as . What is the wave speed?

14 / 30

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

15 / 30

15. Which of the following is an example of dispersion in acoustic media?

16 / 30

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

17 / 30

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

18 / 30

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

19 / 30

19. Which wavefront is produced when a convex lens is illuminated by a point source at its focus?

20 / 30

20. A wave packet has central wavelength and . Estimate coherence length.

21 / 30

21. A string of length is fixed at both ends. If the wave speed on the string is , find the frequency of the fundamental mode.

22 / 30

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

23 / 30

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

24 / 30

24. If a wave strikes a plane barrier at with the normal, what is the angle of reflection?

25 / 30

25. If a wave has amplitude doubled while frequency and wavelength remain the same, how does its energy change?

26 / 30

26. Sound travels in air at 330 m/s and in water at 1500 m/s. If wavelength in air is 1.65 m, what is wavelength in water at same frequency?

27 / 30

27. Which of the following phenomena is explained by the superposition principle?

28 / 30

28. A wavefront strikes a barrier at an angle of with the normal. What is the reflected angle?

29 / 30

29. A circular waveguide of radius operates in TE mode. Calculate cutoff wavelength (use ).

30 / 30

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

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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 devices uses waveguides in microwave engineering?

2 / 50

2. Optical fibers are considered what type of waveguide?

3 / 50

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

4 / 50

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

5 / 50

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

6 / 50

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

7 / 50

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

8 / 50

8. A rectangular waveguide has . Calculate cutoff frequency of TE mode.

9 / 50

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

10 / 50

10. A wavefront strikes a barrier at an angle of with the normal. What is the reflected angle?

11 / 50

11. 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:

12 / 50

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

13 / 50

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

14 / 50

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

15 / 50

15. If the density of a medium increases but elasticity remains the same, what happens to wave speed?

16 / 50

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

17 / 50

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

18 / 50

18. A longitudinal wave has speed 300 m/s and frequency 150 Hz. A transverse wave of the same frequency travels in a string with wavelength 2 m. Which wave travels faster?

19 / 50

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

20 / 50

20. In a transverse wave, how do the particles of the medium move relative to the direction of wave propagation?

21 / 50

21. If two waves of equal amplitude overlap destructively, what happens to intensity?

22 / 50

22. Which of the following is NOT an application of the Doppler effect in sound?

23 / 50

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

24 / 50

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

25 / 50

25. Why is soundproofing important in recording studios?

26 / 50

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

27 / 50

27. A radio station broadcasts at . Find the wavelength of these waves in air.

28 / 50

28. What is dispersion of waves?

29 / 50

29. A wave equation is given as . What is the wave speed?

30 / 50

30. A closed organ pipe resonates in its fundamental mode at 200 Hz. If speed of sound is , find the length of the pipe.

31 / 50

31. 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.

32 / 50

32. Which type of waveguide is more efficient for high-power transmission?

33 / 50

33. A string has tension and linear mass density . Find wave speed.

34 / 50

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

35 / 50

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

36 / 50

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

37 / 50

37. Why does diffraction occur more easily with sound waves than with light waves?

38 / 50

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

39 / 50

39. If the displacement equation of a progressive wave is , find the frequency.

40 / 50

40. For a circular waveguide, what does the cutoff frequency of a mode depend on?

41 / 50

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

42 / 50

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

43 / 50

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

44 / 50

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

45 / 50

45. A wave strikes a plane mirror making with the mirror surface. Find incidence and reflection angle with normal.

46 / 50

46. Which of the following is correct about the relationship between rays and wavefronts?

47 / 50

47. Astronomers use Doppler effect to measure which property of stars and galaxies?

48 / 50

48. The speed of sound in hydrogen at STP is approximately:

49 / 50

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

50 / 50

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

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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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