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Mr. Dubey • 100.64K Points
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Q. The main advantage of having small focal spot on an X ray tube is:

  • (A) Heat is conducted away more efficiently than with a large focal spot
  • (B) A smaller focal spot is unlikely to be damaged from the required tube currents
  • (C) Longer tube life
  • (D) A smaller focal spot allows sharper radiographic images than does a larger
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