Who discovered X-rays?

Who discovered X-rays?
1). Albert Einstein
2). W.K. Roentgen
3). Ernest Rutherford
4). J. J. Thomson

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1. Following questions are completely based upon numbers. In the test, every question consists of four numbers labeled as option A, B, C and D. Your task is to find out the group of digits which contains a “9”. If digit “9” exists in any number (option) then your answer is that option. If more than one number (option) has digit 9, the answer will be E. A.26587233   B.87462611   C.13426514   D.80084925

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5. In which quadrant, will the point (4, -2) be located?

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