Class 12 Physics Electromagnetic waves Electromagnetic Spectrum

Easy

$A$ radar sends waves towards a distant object and receives the signal reflected by the object. These waves are:

A
Sound waves
B
Light waves
C
$IR$ waves
D
Micro waves

Explore More

Browse All

Question Bank

All Subjects

Class 12 Questions

Class 12

Physics Questions

Chapter

Electromagnetic waves

Subtopic

Electromagnetic Spectrum

Similar Questions

If ${\lambda _v}$,${\lambda _x}$,and ${\lambda _m}$ represent the wavelengths of visible light,$X$-rays,and microwaves respectively,then:

The waves used in telecommunication are

Easy

If a source of power $4 \ kW$ produces $10^{20}$ photons/second,the radiation belongs to a part of the spectrum called

MediumAIEEE 2010

Which of the following is not an electromagnetic wave?

Write the sources of microwaves and infrared waves and their uses.

Easy

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.