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General Knowledge (GK) Physics Difficulty: Medium

Which of the following is not true about X-rays?

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When did Afghanistan ends monarchy and became a republic? On December 22, the sun: 1. is not visible at north pole 2. is only visible for a few minutes at the Antarctic Circle 3. rises south of east and sets south of west at the Tropic of Cancer 4. rises south of east and set south of west at the equator Which of the following reform is the legislative contribution of Raja Rammohan Roy? The main buffer system of the human blood is In deep-sea diving, divers use a mixture of gases consisting of oxygen and