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Multiple choice physics magnetism and electromagnetism applications of electromagnets transformer transformers

The magnetic resonance imaging is used as a tool of diagnosis to detect the injuries in human body. It is based on the principle that:

  1. Protons in different types of human tissues have specific magnetic field environment

  2. Magnetic field pattern of human body resonates with the externally applied magnetic field
  3. Either $(1)$ or $(2)$
  4. Neither $(1)$ nor $(2)$
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A Correct answer
Explanation

The basic principle of MRI is protons in different types of human tissues have specific magnetic field environment.