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Voltage applied across the X-ray tube is

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Important Questions on Atomic Physics

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Physics>Modern Physics>Atomic Physics>X - Rays

Which of the following wavelengths falls in

X

-ray region?

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Physics>Modern Physics>Atomic Physics>X - Rays

X-rays consists of

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Physics>Modern Physics>Atomic Physics>X - Rays

What are cathode rays?

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Physics>Modern Physics>Atomic Physics>X - Rays

The shortest wavelength of

X

-rays emitted from an

X

-ray tube depends upon

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Physics>Modern Physics>Atomic Physics>X - Rays

W. K. Roentgen discovered

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Physics>Modern Physics>Atomic Physics>X - Rays

Which wave or ray is produced due to decelerating or accelerating charged particles?

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Physics>Modern Physics>Atomic Physics>X - Rays

For the structural analysis of crystals,

X -

rays are used because:

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Physics>Modern Physics>Atomic Physics>X - Rays

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 .............. (Take

e = 1.6 \times 10^{- 19} C

)

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Physics>Modern Physics>Atomic Physics>X - Rays

X - ray

tube is operated at

66 kV .

Then, in the continuous spectrum of the emitted

X - rays

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Physics>Modern Physics>Atomic Physics>X - Rays

An X-ray photon of wavelength

λ

and frequency

ν

collides with an initially stationary electron (but free to move) and bounces off. If

λ'

and

ν'

are respectively the wavelength and frequency of the scattered photon, then :

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Physics>Modern Physics>Atomic Physics>X - Rays

The voltage applied to the Coolidge

X

-ray tube is increased by

25 %

. As a result, the short wave limit of continuous

X

-ray spectrum shifts by

Δ λ

. The initial voltage applied to the tube is

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Physics>Modern Physics>Atomic Physics>X - Rays

An X-ray tube produces a continuous spectrum of radiation with its shortest wavelength of

45 \times 10^{- 2} Å

. The maximum energy of a photon in the radiation in

eV

(h = 6.62 \times 10^{- 34} J s, c = 3 \times 10^{8} {m s}^{- 1})

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Physics>Modern Physics>Atomic Physics>X - Rays

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

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Physics>Modern Physics>Atomic Physics>X - Rays

The wavelengths of

K_{a}

x

-rays of two metals

‘ A ’

and

‘ B ’

are

\frac{4}{1875 R}

and

\frac{1}{675 R}

respectively, where

‘ R ’

is rydberg constant. The number of elements lying between

‘ A ’

and

‘ B ’

according to their atomic numbers is________

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Physics>Modern Physics>Atomic Physics>X - Rays

The

k

-line of singly ionized calcium has a wavelength of

393.3 nm

as measured on earth. In the spectrum of one of the observed galaxies, this spectral line is located at

401.8 nm

. The speed with which the galaxy is moving away from us, will be

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Physics>Modern Physics>Atomic Physics>X - Rays

In a discharge tube when

200 volt

potential difference is applied

6.25 \times 10^{18}

electrons move from cathode to anode and

3.125 \times 10^{18}

singly charged positive ions move from anode to cathode in one second. Then the power of tube is:

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Physics>Modern Physics>Atomic Physics>X - Rays

The energy of a photon of a characteristic X-ray from a Coolidge tube comes from

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Physics>Modern Physics>Atomic Physics>X - Rays

Which of the following results is correct, if the potential difference between the anode and cathode of the $X$ -ray tube increases ?

Question Image

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Physics>Modern Physics>Atomic Physics>X - Rays

The filament current in the electron gun of a coolidge tube is increased while the potential difference used to accelerate the electrons is decreased. As a result, in the emitted radiation

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Physics>Modern Physics>Atomic Physics>X - Rays

Consider a photon of continuous X-ray coming from a Coolidge tube. Energy of photon comes from

Voltage applied across the X-ray tube is

Important Questions on Atomic Physics

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