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An X-ray tube is operating at 150 kV an...

An X-ray tube is operating at 150 kV and 10 mA. If only 1% of the electric power supplied is converted into X-rays, the rate at which the target is heated in calories per second is

A

3.55

B

35.5

C

355

D

3550

Text Solution

Verified by Experts

The correct Answer is:
C
`P =Vi = 150xx10^3xx10xx10^(-3) = 1485 J//s`
`=(1485)/(4.18 cal//s`
`~~ 355 cal//s`
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