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Which is having minimum wavelength : -
A
X-rays
B
Ultra violet rays
C
$\gamma$-rays
D
Cosmic rays
Detailed Solution
Increasing order of wavelength in the electromagnetic spectrum: $\gamma$-rays $\lt$ X-rays $\lt$ ultraviolet $\lt$ visible $\lt$ infrared $\lt$ microwaves $\lt$ radio waves.
Cosmic rays are extremely high energy radiation/particles coming from outer space. Their energy is even higher than that of $\gamma$-rays, so their associated wavelength is the shortest.
So, as per the answer key, cosmic rays have the minimum wavelength.
Cosmic rays are extremely high energy radiation/particles coming from outer space. Their energy is even higher than that of $\gamma$-rays, so their associated wavelength is the shortest.
So, as per the answer key, cosmic rays have the minimum wavelength.