Which of the following radiations has the least wavelength ?

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$γ$ -rays

Ultraviolet

Radio waves

X-rays

answer is A.

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Detailed Solution

Gamma has the shortest wavelength because it has a greater frequency, which means it can send out more waves per second than any other ype of radiation.
A gamma ray is a packet of electric radiation (photon)emitted by the nucleusof some radionuclides during radioactive decay.
The photons with the highest energy in the electromagnetic spectrum are known as gamma photons.

Hence option 1 is correct

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