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A sub-atomic particle of mass 10 –30 kg is moving with a velocity 2.21 × 10 6 m/s. Under the matter wave consideration, the particle will behave closely like ______. (h = 6.63 × 10 –34 J.s)

1. Infra-red radiation
2. X-rays
3. Gamma rays
4. Visible radiation

Correct answer: X-rays

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