Preparing for the Joint Entrance Exam (JEE) can be a daunting task. With so many subjects to cover and so many topics to study, it can be challenging to know where to start. One essential topic in the JEE Mains syllabus is the Electromagnetic Waves. In this article, we will provide 50+ MCQ questions on the Electromagnetic Waves, along with detailed solutions to help you prepare for the JEE Mains exam.
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These 50+ MCQ questions are selected by the experts of studyrate.in and these are more difficult questions, which will help you to better understand Electromagnetic Waves JEE Mains MCQ Questions with Answers.
Electromagnetic Waves JEE Mains MCQ
Electromagnetic waves are:
A) Mechanical waves
B) Longitudinal waves
C) Transverse waves
D) None of the above
The speed of electromagnetic waves in a vacuum is:
A) 3 × 10^8 m/s
B) 3 × 10^6 m/s
C) 3 × 10^10 m/s
D) 3 × 10^12 m/s
The electromagnetic spectrum includes:
A) Only visible light
B) Only radio waves
C) All forms of electromagnetic waves
D) Only X-rays and gamma rays
The wavelength of an electromagnetic wave is the distance between:
A) Two consecutive crests
B) Two consecutive troughs
C) A crest and a trough
D) Any two points on the wave
The frequency of an electromagnetic wave is:
A) The number of crests passing a point per second
B) The number of troughs passing a point per second
C) The distance between two consecutive crests
D) The speed of the wave divided by its wavelength
The relationship between the speed of light (c), frequency (f), and wavelength (λ) of an electromagnetic wave is given by:
A) c = f × λ
B) c = f/λ
C) c = λ/f
D) c = f + λ
The energy of a photon of electromagnetic radiation is directly proportional to its:
A) Wavelength
B) Frequency
C) Speed
D) Amplitude
The color of visible light with the longest wavelength is:
A) Red
B) Blue
C) Green
D) Yellow
The color of visible light with the shortest wavelength is:
A) Red
B) Blue
C) Green
D) Violet
Which of the following electromagnetic waves has the highest frequency?
A) Radio waves
B) Microwaves
C) X-rays
D) Infrared radiation
Which of the following electromagnetic waves has the highest energy?
A) Radio waves
B) Microwaves
C) X-rays
D) Infrared radiation
The phenomenon of interference is commonly observed in:
A) Radio waves
B) Microwaves
C) X-rays
D) Visible light
The phenomenon of polarization is commonly observed in:
A) Radio waves
B) Microwaves
C) X-rays
D) Visible light
The angle of incidence at which the angle of refraction is 90 degrees is called the:
A) Critical angle
B) Angle of reflection
C) Angle of diffraction
D) Angle of incidence
Total internal reflection occurs when:
A) Light passes from a medium of higher refractive index to a medium of lower refractive index
B) Light passes from a medium of lower refractive index to a medium of higher refractive index
C) Light passes through a transparent medium without any reflection or refraction
D) Light passes through a medium with multiple interfaces
The phenomenon of dispersion is observed when light:
A) Interacts with a diffraction grating
B) Passes through a prism
C) Undergoes total internal reflection
D) Reflects from a smooth surface
The primary colors of light are:
A) Red, blue, and yellow
B) Cyan, magenta, and yellow
C) Red, green, and blue
D) Cyan, green, and yellow
The secondary colors of light are:
A) Red, blue, and yellow
B) Cyan, magenta, and yellow
C) Red, green, and blue
D) Cyan, green, and yellow
In the electromagnetic spectrum, microwaves are used for:
A) Cooking food
B) Communication
C) Medical imaging
D) Killing bacteria
In the electromagnetic spectrum, X-rays are used for:
A) Cooking food
B) Communication
C) Medical imaging
D) Killing bacteria
In the electromagnetic spectrum, gamma rays are used for:
A) Cooking food
B) Communication
C) Medical imaging
D) Killing bacteria
In the electromagnetic spectrum, radio waves are used for:
A) Cooking food
B) Communication
C) Medical imaging
D) Killing bacteria
Electromagnetic waves can be produced by:
A) Oscillating electric charges
B) Moving magnets
C) Vibrating atoms or molecules
D) All of the above
The device used to generate and detect electromagnetic waves is called a:
A) Transistor
B) Capacitor
C) Oscillator
D) Antenna
The device used to amplify electromagnetic waves is called a:
A) Transistor
B) Capacitor
C) Oscillator
D) Antenna
The process of sending and receiving information using electromagnetic waves is called:
A) Diffraction
B) Interference
C) Modulation
D) Polarization
The unit of frequency is:
A) Hertz (Hz)
B) Meters per second (m/s)
C) Newton (N)
D) Joule (J)
The unit of wavelength is:
A) Hertz (Hz)
B) Meters per second (m/s)
C) Newton (N)
D) Meters (m)
The unit of energy for photons is:
A) Hertz (Hz)
B) Joule (J)
C) Newton (N)
D) Meter per second squared (m/s²)
The electromagnetic waves with the longest wavelength are:
A) Radio waves
B) Microwaves
C) X-rays
D) Gamma rays
We hope there JEE MCQ of Class 12 Electromagnetic Waves will help you to score an excellent rank in JEE Mains and Advanced. If you have any queries feel free to write in the comments section. We at Study Rate are always ready to serve our students.
