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In an X-ray tube if the electrons are ac...

In an X-ray tube if the electrons are accelerated through `140KV` then anode current obtained is 30mA. If the whole energy of electrons is converted into heat then the rate of production of heat at anode will be

A

968 calorie

B

892 calorie

C

1000 calorie

D

286 calorie

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The correct Answer is:
C
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