Electromagnetic Waves and Communication System
Maharashtra Board · Class 11 · Physics
Practice quiz for Electromagnetic Waves and Communication System — Maharashtra Board Class 11 Physics. MCQs and questions with answers to test your preparation.
Interactive on Super Tutor
Studying Electromagnetic Waves and Communication System? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for practice quiz and more.
1,000+ Class 11 students started this chapter today
Quick Quiz: Electromagnetic Waves and Communication System
0/4Tap an answer to check it instantly. No sign-up needed for these 4.
What is the speed of electromagnetic waves in vacuum?
Calculate the wavelength of radio waves of frequency 1 MHz in air.
Which of the following waves has the highest frequency in the electromagnetic spectrum?
If the electric field amplitude in an EM wave is 100 V/m, what is the magnetic field amplitude?
Sample Questions
In an electromagnetic wave, the electric field E and magnetic field B are:
Show answer
Perpendicular to each other, Perpendicular to the direction of propagation, In phase with each other
In an EM wave, E and B fields are mutually perpendicular, both perpendicular to the direction of propagation (making EM waves transverse), and they oscillate in phase with the same frequency.
Which waves are used for microwave ovens?
Show answer
Microwaves
Microwave ovens use microwaves (frequency ~2.45 GHz) because they are efficiently absorbed by water molecules in food, causing them to vibrate and generate heat through molecular friction.
Calculate the range of a TV transmitter antenna of height 125 m. (Take R = 6400 km)
Show answer
40 km
Using the formula d = √(2Rh), where R = 6400×10³ m and h = 125 m. d = √(2×6400×10³×125) = √(1.6×10⁹) = 40×10³ m = 40 km. This is the line-of-sight range.
Which type of waves are primarily used for AM radio broadcasting?
Show answer
Ground waves
AM radio (frequency < 2 MHz) uses ground wave propagation. These waves follow the Earth's curvature and are suitable for local broadcasting, though they have limited range due to ground absorption.
+40 more questions available
Practice AllFrequently Asked Questions
What are the important topics in Electromagnetic Waves and Communication System for Maharashtra Board Class 11 Physics?
How to score full marks in Electromagnetic Waves and Communication System — Maharashtra Board Class 11 Physics?
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Electromagnetic Waves and Communication System
Important Questions
Practice with board exam-style questions
Syllabus
What topics to cover
Revision Notes
Key points for last-minute revision
Study Plan
Step-by-step plan to ace this chapter
Flashcards
Quick-fire cards for active recall
Formula Sheet
All formulas in one place
Chapter Summary
Understand the chapter at a glance
Concept Maps
See how topics connect visually
NCERT Solutions
Every textbook question solved step by step
For serious students
Get the full Electromagnetic Waves and Communication System chapter — for free.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for Maharashtra Board Class 11 Physics.