(A) The electromagnetic spectrum is classified based on frequency and wavelength ranges.Radio waves typically cover frequencies up to $300 \ GHz$.Sinc

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(A) The electromagnetic spectrum is classified based on frequency and wavelength ranges.Radio waves typically cover frequencies up to $300 \ GHz$.Since the given frequency is $1057 \ MHz$ (which is $1.057 \ GHz$),it falls well within the range of radio waves.Specifically,this frequency corresponds to the hyperfine transition in hydrogen atoms,which is a well-known radio frequency emission.

Class 12 Physics Electromagnetic waves Electromagnetic Spectrum

Easy

The radiation of frequency $1057 \ MHz$ coming from two close energy levels of hydrogen belongs to which part of the electromagnetic spectrum?

A
Radio waves
B
Ultraviolet rays
C
Microwaves
D
$X$-rays

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Class 12

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Chapter

Electromagnetic waves

Subtopic

Electromagnetic Spectrum

Match the List-$I$ with List-$II$:

List-$I$ List-$II$

$A$. Microwaves $I$. Radioactive decay of the nucleus

$B$. Gamma rays $II$. Rapid acceleration and deceleration of electrons in aerials

$C$. Radio waves $III$. Inner shell electrons

$D$. $X$-rays $IV$. Klystron valve

Choose the correct answer from the options given below:

List-$I$	List-$II$
$A$. Microwaves	$I$. Radioactive decay of the nucleus
$B$. Gamma rays	$II$. Rapid acceleration and deceleration of electrons in aerials
$C$. Radio waves	$III$. Inner shell electrons
$D$. $X$-rays	$IV$. Klystron valve