Class 11 Physics MCQ Chapter 15 Waves English Medium
Are you searching for Class 11 Physics MCQ Chapter 15 Waves English Medium? Then this article is the perfect study resource for AHSEC Higher Secondary First Year students. Here, you will find important multiple-choice questions (MCQs) with answers that will help you prepare effectively for your Physics examinations.
The chapter Waves explains how energy travels through different mediums without the actual movement of matter. Students will learn about wave motion, transverse and longitudinal waves, wavelength, frequency, time period, wave speed, superposition of waves, reflection of waves, and standing waves. The chapter also covers sound waves and their important properties, which are widely used in everyday life and technology.
The MCQs provided here are prepared according to the latest AHSEC syllabus and examination pattern. These objective questions help students revise important concepts, improve problem-solving abilities, and become familiar with exam-oriented questions. Regular practice can strengthen conceptual understanding and increase confidence before examinations.
Part II
Class 11 Physics MCQ Chapter 15 Waves English Medium
VSA & MCQs
I. Very Short Answer (VSA) Questions with Answers
Q. What is a wave?
Ans: A wave is a disturbance that transfers energy from one place to another without the transfer of matter.
Q. What is a mechanical wave?
Ans: A wave that requires a material medium for propagation.
Q. What is an electromagnetic wave?
Ans: A wave that does not require a material medium for propagation.
Q. What is wave motion?
Ans: The propagation of disturbance through a medium is called wave motion.
Q. What is wavelength?
Ans: Distance between two consecutive particles in the same phase.
Q. What is the SI unit of wavelength?
Ans: Metre (m).
Q. What is the frequency of a wave?
Ans: Number of vibrations completed in one second.
Q. What is the time period of a wave?
Ans: Time taken to complete one vibration.
Q. What is wave velocity?
Ans: Distance travelled by a wave per unit time.
Q. What is the amplitude of a wave?
Ans: Maximum displacement of particles from the mean position.
Q. What is a transverse wave?
Ans: A wave in which particles vibrate perpendicular to the direction of propagation.
Q. What is a longitudinal wave?
Ans: A wave in which particles vibrate parallel to the direction of propagation.
Q. Give one example of a transverse wave.
Ans: Light wave.
Q. Give one example of a longitudinal wave.
Ans: Sound wave in air.
Q. What are compressions?
Ans: Regions of high pressure and density in longitudinal waves.
Q. What are rarefactions?
Ans: Regions of low pressure and density in longitudinal waves.
Q. What is sound?
Ans: Sound is a form of energy produced by vibrating bodies.
Q. What is the audible range of sound?
Ans: (20,Hz) to (20,000,Hz)
Q. What is infrasonic sound?
Ans: Sound having a frequency less than (20,Hz).
Q. What is ultrasonic sound?
Ans: Sound having a frequency greater than (20,000,Hz).
Q. What is the Doppler effect?
Ans: Apparent change in frequency due to relative motion between source and observer.
Q. What is a stationary wave?
Ans: A wave formed by the superposition of two waves travelling in opposite directions.
Q. What is resonance in waves?
Ans: Resonance occurs when the frequency of the applied force equals the natural frequency.
Multiple Choice Questions (MCQs)
Q. A wave transfers:
(a) Matter only
(b) Energy only
(c) Both matter and energy
(d) Neither matter nor energy
Ans: (b) Energy only
Q. Mechanical waves require:
(a) Vacuum
(b) Material medium
(c) Electric field
(d) Magnetic field
Ans: (b) Material medium
Q. Light waves are:
(a) Longitudinal
(b) Mechanical
(c) Transverse
(d) Stationary
Ans: (c) Transverse
Q. Sound waves in air are:
(a) Transverse
(b) Longitudinal
(c) Electromagnetic
(d) Stationary
Ans: (b) Longitudinal
Q. The SI unit of frequency is:
(a) Metre
(b) Hertz
(c) Second
(d) Joule
Ans: (b) Hertz
Q. Frequency and time period are:
(a) Directly proportional
(b) Equal
(c) Inversely proportional
(d) Independent
Ans: (c) Inversely proportional
Q. The distance between two consecutive crests is called:
(a) Amplitude
(b) Frequency
(c) Wavelength
(d) Velocity
Ans: (c) Wavelength
Q. Audible sound range for humans is:
(a) (0-20,Hz)
(b) (20-200,Hz)
(c) (20-20,000,Hz)
(d) (20,000-40,000,Hz)
Ans: (c) (20-20,000,Hz)
Q. In transverse waves, particles vibrate:
(a) Parallel to propagation
(b) Perpendicular to propagation
(c) Randomly
(d) Circularly
Ans: (b) Perpendicular to propagation
Q. Compressions and rarefactions are formed in:
(a) Transverse waves
(b) Light waves
(c) Longitudinal waves
(d) Electromagnetic waves
Ans: (c) Longitudinal waves
Q. Which wave can travel through a vacuum?
(a) Sound wave
(b) Water wave
(c) Light wave
(d) Seismic wave
Ans: (c) Light wave
Q. The Doppler effect is related to a change in:
(a) Velocity
(b) Amplitude
(c) Frequency
(d) Wavelength only
Ans: (c) Frequency
Q. The SI unit of wavelength is:
(a) Second
(b) Metre
(c) Hertz
(d) Joule
Ans: (b) Metre
Q. Which quantity determines the pitch of sound?
(a) Amplitude
(b) Frequency
(c) Velocity
(d) Intensity
Ans: (b) Frequency
Q. Loudness of sound depends on:
(a) Frequency
(b) Wavelength
(c) Amplitude
(d) Velocity
Ans: (c) Amplitude
Q. Which phenomenon produces stationary waves?
(a) Reflection
(b) Refraction
(c) Superposition
(d) Dispersion
Ans: (c) Superposition
Q. Sound cannot travel through:
(a) Solids
(b) Liquids
(c) Gases
(d) Vacuum
Ans: (d) Vacuum
Q. The speed of sound is maximum in:
(a) Gases
(b) Liquids
(c) Solids
(d) Vacuum
Ans: (c) Solids
Q. Which wave property remains unchanged when a wave enters another medium?
(a) Velocity
(b) Wavelength
(c) Frequency
(d) Amplitude
Ans: (c) Frequency
Q. Echo is due to:
(a) Refraction
(b) Reflection
(c) Diffraction
(d) Interference
Ans: (b) Reflection
Q. Which instrument uses ultrasonic waves?
(a) Thermometer
(b) SONAR
(c) Barometer
(d) Ammeter
Ans: (b) SONAR
Q. A crest is associated with:
(a) Longitudinal wave
(b) Transverse wave
(c) Compression
(d) Rarefaction
Ans: (b) Transverse wave
Q. Which property of sound determines quality or timbre?
(a) Frequency
(b) Wave velocity
(c) Waveform
(d) Wavelength
Ans: (c) Waveform
Q. The speed of a wave depends on:
(a) Nature of medium
(b) Amplitude only
(c) Frequency only
(d) Time period only
Ans: (a) Nature of medium
Q. Resonance occurs when frequencies are:
(a) Different
(b) Equal
(c) Zero
(d) Infinite
Ans: (b) Equal
Q. Which type of waves are produced on stretched strings?
(a) Electromagnetic waves
(b) Longitudinal waves
(c) Stationary waves
(d) Random waves
Ans: (c) Stationary waves
Q. Assertion (A): Sound waves in air are longitudinal.
Reason (R): Air particles vibrate parallel to the direction of wave propagation.
(a) Both A and R are true, and R is the correct explanation of A.
(b) Both A and R are true, but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false, but R is true.
Ans: (a) Both A and R are true, and R is the correct explanation of A.
Q. Assertion (A): Light waves can travel through a vacuum.
Reason (R): Light waves are electromagnetic waves.
(a) Both A and R are true, and R is the correct explanation of A.
(b) Both A and R are true, but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false, but R is true.
Ans: (a) Both A and R are true, and R is the correct explanation of A.
Q. Assertion (A): Frequency remains unchanged when a wave enters another medium.
Reason (R): Frequency depends on the source of the wave.
(a) Both A and R are true, and R is the correct explanation of A.
(b) Both A and R are true, but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false, but R is true.
Ans: (a) Both A and R are true, and R is the correct explanation of A.
Q. Assertion (A): The speed of sound is greater in solids than in gases.
Reason (R): Particles are more closely packed in solids.
(a) Both A and R are true, and R is the correct explanation of A.
(b) Both A and R are true, but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false, but R is true.
Ans: (a) Both A and R are true, and R is the correct explanation of A.
Q. Assertion (A): Echo is produced due to the reflection of sound.
Reason (R): Sound waves obey the laws of reflection.
(a) Both A and R are true, and R is the correct explanation of A.
(b) Both A and R are true, but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false, but R is true.
Ans: (a) Both A and R are true, and R is the correct explanation of A.
Q. Assertion (A): Loudness of sound depends on amplitude.
Reason (R): Greater amplitude carries more energy.
(a) Both A and R are true, and R is the correct explanation of A.
(b) Both A and R are true, but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false, but R is true.
Ans: (a) Both A and R are true, and R is the correct explanation of A.
Q. Assertion (A): Resonance produces large-amplitude vibrations.
Reason (R): Applied frequency becomes equal to natural frequency.
(a) Both A and R are true, and R is the correct explanation of A.
(b) Both A and R are true, but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false, but R is true.
Ans: (a) Both A and R are true, and R is the correct explanation of A.
