In Class 11 Final Exams there will be Case studies and Passage Based Questions will be asked, So practice these types of questions. Study Rate is always there to help you. Free PDF Downloads of CBSE Class 11 Physics Chapter 15 Case Study and Passage-Based Questions with Answers were Prepared Based on the Latest Exam Pattern. Students can solve Class 11 Physics Case Study Questions Waves to know their preparation level.
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In CBSE Class 11 Physics Paper, There will be a few questions based on case studies and passage-based as well. In that, a paragraph will be given, and then the MCQ questions based on it will be asked.
Waves Case Study Questions With Answers
Here, we have provided case-based/passage-based questions for Class 11 Physics Chapter 15 Waves
Case Study/Passage-Based Questions
Case Study 1: Transverse waves forms if the particles of the medium vibrate at a right angle to the direction of wave motion energy propagation, the wave is called a transverse wave. These are propagated as crests and troughs.
Longitudinal waves form if the particles of the medium vibrate in the direction of wave motion, the wave is called longitudinal. These are propagated as compressions and rarefactions and wave is also known as pressure or compressional wave. Wave on spring or sound waves in air are examples of longitudinal waves.
In a transverse wave, the particles of the medium
(a) vibrate in a direction perpendicular to the direction of the propagation
(b) vibrate in a direction parallel to the direction of the propagation
(c) move in circle (d) move in ellipse
Answer: (a) vibrate in a direction perpendicular to the direction of the propagation
A transverse wave consists of
(a) only crests (b) only troughs
(c) both crests and troughs
(d) rarefactions and compressions
Answer: (c) both crests and troughs
Ultrasonic waves produced by a vibrating quartz crystal are
(a) only longitudinal (b) only transverse
(c) both longitudinal and transverse
(d) neither longitudinal nor transverse
Answer: (a) only longitudinal
Sound waves travel fastest in
(a) solids (b) liquids
(c) gases (d) vacuum
Answer: (a) solids
Sound waves in air cannot be polarized because
(a) their speed is small
(b) they require medium
(c) they are longitudinal
(d) their speed is temperature dependent
Answer: (c) they are longitudinal
Case Study 2: Waves are a common and fascinating phenomenon observed in various aspects of nature. They are the transfer of energy through a medium without a permanent displacement of the medium itself. Mechanical waves, such as sound waves and water waves, require a medium (solid, liquid, or gas) to travel. On the other hand, electromagnetic waves, like light waves, can travel through a vacuum as they do not require a medium. Waves are characterized by their amplitude, wavelength, frequency, and speed. The amplitude is the maximum displacement of particles in the medium from their equilibrium position, while the wavelength is the distance between two consecutive crests or troughs. The frequency represents the number of oscillations per second, measured in Hertz (Hz). The speed of a wave depends on the properties of the medium through which it travels and is given by the product of wavelength and frequency.
Waves transfer energy through a medium without:
(a) Oscillation
(b) Displacement of the medium
(c) Amplitude
(d) Reflection
Answer: (b) Displacement of the medium
Mechanical waves, such as sound waves and water waves, require a medium composed of:
(a) Electromagnetic fields
(b) Photons
(c) Particles (solid, liquid, or gas)
(d) Vacuum
Answer: (c) Particles (solid, liquid, or gas)
The distance between two consecutive crests or troughs of a wave is called:
(a) Frequency
(b) Amplitude
(c) Wavelength
(d) Speed
Answer: (c) Wavelength
The speed of a wave is given by the product of its:
(a) Amplitude and wavelength
(b) Wavelength and frequency
(c) Frequency and amplitude
(d) Frequency and speed
Answer: (b) Wavelength and frequency
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