An x-ray tube is operated at `20 kV` and the current through the tube is `0*5 mA`. Find (a) the number of electrons hitting the target per second, (b) the energy falling on the target per second as the kinetic energy of the electrons and the cutoff wavelength of the X-rays emitted.
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As per accepted concept of hormone action, if receptor molecules are removed from target organs, the target organs will
Correct Answer - A Hormones are released in normal blood circulation but each hormone stimulates only a specific targest organ to initiate a specific response. It is because of the presence...
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A rifleman is firing at a distant target ansd hence, has only `10%` chances of hitting it. Find the number of rounds, he must fire in order to have mo
Let a rifieman fires n number of rounds. Probability of hitting the targeet, `p=1/10.` `therefore` Probability of not hitting the target, `q=1-1/10=9/10.` `therefore` Probability of hitting the target at least...
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Suppose A and B shoot independently until each hits his target. They have probabilities `3/5` and `5/7` of hitting the target at each shot. The probab
Let Xbe the number of times A shoots at the target to hit it for the first time and Y be the number of times B shoots at the target...
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In a precision bombing attack, there is a `50%` chance that any one bomb will strick the target. Two direct hits are required to destroy the target co
Correct Answer - A::B::D We have, the probability that the bomb stricks the target is `p=1//2.` Let n be the number of boombs which should be dropped to ensure `99%` chance...
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An X ray tube with Copper target is found to emit characteristic X rays other than only due to Copper. The ka lie of Copper has a wavelength of `1.540
Correct Answer - `._(28)Ni`
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An X-ray tube has nickel as target. The wavelength difference between the ka X-ray and the cut-off wavelength of continuous X-ray spectrum is 84 pm. F
Correct Answer - `14.8 kV`
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In a X-ray tube, after an electron has been removed from an inner shell of a target atom, an electron from outer shell falls into the vacancy and the
Correct Answer - `E_(k) - 2E_(L)`
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Show that drift velocity of electrons in a conductor is given by u = `J/(ne)` where J is the current density, n is the number of mobile electrons per
Correct Answer - `6.5 xx 10^(-5)ms^(-1)`
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Find the maximum potential difference which may be applied across an X-ray tube with tungsten target without emitting any characteristics K or L X-ray
Correct Answer - [Less than 11.3 kV]
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The distance between the cathode (filament) and the target in an X-ray tube is 1.5 m. If the cutoff wavelength is 30 pm, find the electric field betwe
Correct Answer - `27.7 kV//m`
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