Explanation
E=hcλ
λ=hcE=6.626×10−34×3×10814.4×1.6×10−19=0.86×10−09
Cosmic Rays 10−14mto10−12m
γ Rays 10−12mto10−10m
x Rays 10−10mto10−09m
Ultraviolet Rays 10−7mto4×10−7m
Hence, it lies in x Rays region.
Ultraviolet Rays 10−07mto4×10−07m
Hence, Cosmic Rays have smallest wavelength.
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