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Ram Sharma • 193.86K Points
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Q. X-rays can be used

  • (A) to detect gold under the earth.
  • (B) to detect defects in precious stones & diamonds.
  • (C) for cutting & welding of metals.
  • (D) to detect heart diseases.
  • Correct Answer - Option(B)
  • Views: 233
  • Filed under category Physics

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