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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Physics
Chapter
Atomic Physics

NTA Abhyas 2020 · Physics · Atomic Physics

The potential difference across a Coolidge tube is 20kV and 10mA...

The potential difference across a Coolidge tube is 20kV20kV and 10mA10mA current flows through the voltage supply. Only \text{0.5%} of the energy, carried by electrons striking the target, is converted into XX-ray. Then the power carried by XX-ray beam (in WW) is

Correct answer

1

Step-by-step solution

P=VIP = VI
Total power drawn by the tube =PT=VI=200W= {P}_{T} = VI = 200W
As \text{0.5%} of energy is carried by electrons, the power of X-ray will be~\text{0.5%} \times {P}_{T} = 1W
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