X rays Questions

124 Physics questions for JEE Main & NEET. Includes 1 PYQ questions.

124 Questions1 PYQ
PYQ 2014Medium90s

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/&#95...

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Easy90s

The shortest wavelength of X-rays emitted from an X-ray tube depends on

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Easy90s

The X-ray beam coming from an X-ray tube will be

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Easy90s

The 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

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Easy90s

X-rays are produced in an X-ray tube operating at a given accelerating voltage. The wavelengths of the continuous X-ray spectrum range from:

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Easy90s

The 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:

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Easy90s

The 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 :-...

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Easy90s

What determines the hardness of the X-rays obtained from the coolidge tube -

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Easy90s

De Broglie wavelength of incident electrons at metal Mo is 0.1(Ao). The minimum wavelength of X-ray produced from Mo is

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Easy90s

If voltage of X-ray tube is doubled then intensity of X-rays will :-

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Easy90s

When 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-...

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Easy90s

The potential difference applied to an X-rays tube is increased. As a result, in theemitted radiation

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Medium90s

Electrons 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:

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Medium90s

Which one of the following statements is WRONG in the context of X-rays generated from a X-ray tube?

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Medium90s

Electrons with de-Broglie wavelength λ fall on the target in an X-ray tube. The cut-off wavelength of the emitted Xrays is

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Medium90s

X-ray will not show the phenomenon of :

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Medium90s

When cathode rays strike a metal target of high melting point with a very high velocity then which of the following are produced ?[

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Medium90s

Characteristic X-ray are produced due to

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Medium90s

Solid 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...

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Medium90s

Hard 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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