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The correct match between the entries in column is column II are

Radiation Wavelength
a) Microwave i) 100m
b) Gamma rays ii) $10^{- 15} m$
c) A.M radio waves iii) $10^{- 10} m$
d) X – rays iv) $10^{- 3} m$
a b c d
1) ii i iv iii
2) iv ii i iii
3) iii ii i iv
4) i iii iv ii

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answer is B.

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Detailed Solution

Energy sequence of radiations is

$E_{Y -rays} > E_{X -rays} > E_{{microwave}} > E_{AM radiowaves}$

$∴ λ_{Y -rays} < λ_{X -rays} < λ_{{microwave}} < λ_{AM radiowaves}$

From the above sequence, we have

Radiation		Wavelength
Microwave	$\to$	$10^{- 3} m$
Gamma rays	$\to$	$10^{- 15} m$
A.M radio waves	$\to$	100m
X – rays	$\to$	$10^{- 10} m$

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