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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. Constructive interference occurs when:

2 / 30

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

3 / 30

3. A wave strikes a barrier at incidence. What is the reflection angle?

4 / 30

4. In spherical waves, rays and wavefronts are related as:

5 / 30

5. What is the relationship between rays and wavefronts?

6 / 30

6. In the same wave equation , what is the wavelength?

7 / 30

7. A transverse wave travels along a string with frequency 20 Hz and wavelength 0.5 m. A longitudinal sound wave of same frequency is produced in air with speed 340 m/s. What is its wavelength?

8 / 30

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

9 / 30

9. For a wave equation, if wave speed , frequency , what is wavelength?

10 / 30

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

11 / 30

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

12 / 30

12. Which wave phenomenon can occur for both mechanical and electromagnetic waves?

13 / 30

13. 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?

14 / 30

14. What is the correct definition of a wave?

15 / 30

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

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

18 / 30

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

19 / 30

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

20 / 30

20. An open pipe resonates at fundamental frequency of 170 Hz. If speed of sound = 340 m/s, what is pipe length?

21 / 30

21. Optical fibers are considered what type of waveguide?

22 / 30

22. Which of the following statements correctly describes compressions in a longitudinal wave?

23 / 30

23. A tuning fork of frequency resonates with a closed organ pipe. If the length of air column is , calculate the speed of sound.

24 / 30

24. If two notes of 400 Hz and 402 Hz are played together, what will a musician hear?

25 / 30

25. What is a wavefront?

26 / 30

26. A copper rod has Young’s modulus and density . Find speed of longitudinal waves.

27 / 30

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

28 / 30

28. Which of the following technologies is based on reflection of sound waves?

29 / 30

29. A string of length , mass , is under tension of . Find the fundamental frequency.

30 / 30

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

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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 / 30

1. What is the general solution to the wave equation in one dimension?

2 / 30

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

3 / 30

3. A sound wave in a medium has speed and frequency . Find its wavelength.

4 / 30

4. A transverse wave is represented as . If it reflects at a fixed end, what will be the equation of the reflected wave?

5 / 30

5. Destructive interference occurs when:

6 / 30

6. A sound wave has frequency 500 Hz and speed 340 m/s. Find its wavelength.

7 / 30

7. Holography is an application of:

8 / 30

8. Why are waveguides preferred over coaxial cables in microwave engineering?

9 / 30

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

10 / 30

10. If the frequency of a wave is and its wavelength is , what is its speed?

11 / 30

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

12 / 30

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

13 / 30

13. Which boundary condition in transverse waves causes inversion of reflected pulse?

14 / 30

14. In a string fixed at both ends vibrating in its fundamental mode, how many nodes and antinodes are formed?

15 / 30

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

16 / 30

16. What is spatial dispersion?

17 / 30

17. A diffraction grating works on the principle of:

18 / 30

18. Which of the following wave phenomena is directly explained by the law of reflection?

19 / 30

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

20 / 30

20. In fiber-optic links, how is dispersion compensated?

21 / 30

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

22 / 30

22. Which property do transverse and longitudinal waves NOT share in common?

23 / 30

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

24 / 30

24. What is a waveguide?

25 / 30

25. What is diffraction of waves?

26 / 30

26. If unpolarized light is incident on a polarizer, followed by another polarizer rotated at , what fraction of original intensity is transmitted?

27 / 30

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

28 / 30

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

29 / 30

29. Which application of acoustics uses reflection of sound waves?

30 / 30

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

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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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