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Question

E.O. Lawrence was awarded the 1939 Physics Nobel Prize for invention and development of ______.

A
diode
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B
microwave transmitter
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C
cyclotron
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D
none of these
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Solution

The correct option is C cyclotron
A cyclotron is a type of particle accelerator invented by Ernest O. Lawrence in 1932 in which charged particles accelerate outwards from the center along a spiral path. The particles are held to a spiral trajectory by a static magnetic field and accelerated by a rapidly varying (radio frequency) electric field.

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