An X-ray tube is operating at 50 kV and 20 mA. The target material of the tube has a mass of 1.0 kg and specific heat 495 J kg-1 $$^{o}{{C}^{-1}}$$. One percent of the supplied electric power is converted into X-rays and the entire remaining energy goes into heating the target. Then [IIT 1995]

Question

An X-ray tube is operating at 50 kV and 20 mA. The target material of the tube has a mass of 1.0 kg and specific heat 495 J kg-1 $$^{o}{{C}^{-1}}$$. One percent of the supplied electric power is converted into X-rays and the entire remaining energy goes into heating the target. Then                                            [IIT 1995]

TuteeHUB · Accepted Answer

The minimum wavelength of the X-rays emitted is about $$0.25\times {{10}^{-10}}\,m$$

TuteeHUB · Answer

A suitable target material must have a high melting temperature

TuteeHUB · Answer

A suitable target material must have low thermal conductivity

TuteeHUB · Answer

The average rate of rise of temperature of target would be 2 °C/s

1.	An X-ray tube is operating at 50 kV and 20 mA. The target material of the tube has a mass of 1.0 kg and specific heat 495 J kg-1 \[^{o}{{C}^{-1}}\]. One percent of the supplied electric power is converted into X-rays and the entire remaining energy goes into heating the target. Then [IIT 1995]
A.	A suitable target material must have a high melting temperature
B.	A suitable target material must have low thermal conductivity
C.	The average rate of rise of temperature of target would be 2 °C/s
D.	The minimum wavelength of the X-rays emitted is about \[0.25\times {{10}^{-10}}\,m\]
Answer» D. The minimum wavelength of the X-rays emitted is about \[0.25\times {{10}^{-10}}\,m\]

An X-ray tube is operating at 50 kV and 20 mA. The target material of the tube has a mass of 1.0 kg and specific heat 495 J kg-1 \[^{o}{{C}^{-1}}\]. One percent of the supplied electric power is converted into X-rays and the entire remaining energy goes into heating the target. Then [IIT 1995]

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