X rays Questions
124 Physics questions for JEE Main & NEET. Includes 1 PYQ questions.
If λCu is the wavelength of Kα X-ray line of copper (atomic number 29) and λMo is the wavelength of the Kα X-ray line of molybdenum (atomic number 42), then the ratio λCu/_...
View solutionThe Kα X-ray emission line of tungsten occurs at λ = 0.021 nm. The energy difference between K and L levels in this atoms is about
View solutionX-rays are produced in an X-ray tube operating at a given accelerating voltage. The wavelengths of the continuous X-ray spectrum range from:
View solutionThe potential difference applied to an X-ray tube is 5 kV and the current through it is 3.2 mA. The number of electrons striking the target per second is:
View solutionThe ionisation energies of K-shell for cobalt, copper, and molebdenum are 7.8, 9.0 and 20.1 KeV respectively. If any metal out of these is used as target in an X-ray tube operated at 15KV, then :-...
View solutionDe Broglie wavelength of incident electrons at metal Mo is 0.1(Ao). The minimum wavelength of X-ray produced from Mo is
View solutionWhen monochromatic X-rays (λ = 1(Ao)) pass through a thin film of gold of thickness 3mm, its intensity reduces to half. The coefficient of absorption of the gold is-...
View solutionThe potential difference applied to an X-rays tube is increased. As a result, in theemitted radiation
View solutionElectrons with energy 80 keV are incident on the tungsten target of an X-ray tube. K-shell electrons of tungsten have a binding energy of 72.2 keV. The X-rays emitted by the tube contain:
View solutionWhich one of the following statements is WRONG in the context of X-rays generated from a X-ray tube?
View solutionElectrons with de-Broglie wavelength λ fall on the target in an X-ray tube. The cut-off wavelength of the emitted Xrays is
View solutionWhen cathode rays strike a metal target of high melting point with a very high velocity then which of the following are produced ?[
View solutionSolid targets of different elements are bombarded by highly energetic electron beam. the frequency (f) of the characteristic X-rays emitted from different targets varies with atomic number Z as...
View solutionHard X-rays for the study of fractures in bones should have a minimum wavelength of 1011 m. The accelerating voltage for electrons in X-ray machine should be
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