NextMockપરીક્ષાઓ શોધો, દા.ત. SSC CGL, UPPSC, Lekhpal
State PCS PYQPrelims 2018

UPPCS · પ્રશ્ન 60

Which of the following was invented by Wilhelm Roentgen?

  1. Radio
  2. X-Ray Machine
  3. Electric Bulb
  4. None of the above
જવાબ બતાવો અને સમજૂતી

જવાબ: (B) X-Ray Machine

સમજૂતી

Wilhelm Conrad Röntgen discovered X-rays in 1895 and received the first Nobel Prize in Physics (1901).