Question

(i) Draw a labelled graph showing variation of relative intensity of X-rays versus their wavelength λ . Mark on the graph.

(ii) State how the value of can be varied.

Solution

i) The below graph shows the variation of intensity of X-rays VS. theri wavelength $straight lambda$ .

ii) $straight lambda$ _min is inversely proportioned to voltage applied to X ray tube.

Question

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An X ray tube is operated at a tube potential of 40,000 V. Calculate :

(i) Kinetic energy of an electron emitted by the filament when it reaches the target / anode.

(ii) Wavelengths of all the X rays emitted by the X ray tube.

Solution

(i) Given V = 40,000V.

We know KE = eV

= 1.6 x 10^-19x 40,000

= 6.4 x lO^-15 J.
ii) We know,
$straight lambda subscript min space equals space fraction numerator 6.6 space straight x space 10 to the power of negative 34 end exponent space straight x space 3 space straight x space 10 to the power of 8 over denominator 1.6 space straight x space 10 to the power of negative 19 end exponent space straight x space 40 comma 000 end fraction space space space space space space space equals space fraction numerator 1.98 space straight x space 10 to the power of negative 25 end exponent over denominator 1.6 space straight x space 10 to the power of negative 19 end exponent space straight x space 40 comma 000 end fraction space space space space space space space equals space 0.309375 space straight x space 10 to the power of negative 11 end exponent space space space space space space space space equals space 0.309375 space straight A Range space rightwards arrow space 0.309375 space straight A space to space infinity. space$

Question

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Which electromagnetic wave is longer than X-ray but shorter than light wave?

Solution

Ultraviolet waves are the electromagnetic wave which are longer than X-ray but shorter than light wave.

Question

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Figure 12 below shows a simple X ray tube. P₁ and P₂ are power supplies which generate 6 V and 40,000 V respectively. Show how you will connect these power supplies to the X ray tube so that it starts producing X rays.

Solution

The 40000 volt (P₂)supply is connected across the x-ray tube where as P₁ supply of 6 volt is connected across the Filament F. The positive end of the P₂ supply is connected to target

T and negative end of P₂ is connected to one of the terminal of filament F.
The negative end of the P₁ is connected to that terminal of the filament where the P₂ is connected and positive end of the P₁ is connected to the other terminal of the filament.

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X-Rays

(i) Draw a labelled graph showing variation of relative intensity of X-rays versus their wavelength λ . Mark on the graph.

(ii) State how the value of can be varied.

An X ray tube is operated at a tube potential of 40,000 V. Calculate :

(i) Kinetic energy of an electron emitted by the filament when it reaches the target / anode.

(ii) Wavelengths of all the X rays emitted by the X ray tube.

Which electromagnetic wave is longer than X-ray but shorter than light wave?

Figure 12 below shows a simple X ray tube. P₁ and P₂ are power supplies which generate 6 V and 40,000 V respectively. Show how you will connect these power supplies to the X ray tube so that it starts producing X rays.

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

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For Daily Free Study Material Join wiredfaculty

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X-Rays

(i) Draw a labelled graph showing variation of relative intensity of X-rays versus their wavelength λ . Mark on the graph.(ii) State how the value of can be varied.

An X ray tube is operated at a tube potential of 40,000 V. Calculate : (i) Kinetic energy of an electron emitted by the filament when it reaches the target / anode. (ii) Wavelengths of all the X rays emitted by the X ray tube.

Which electromagnetic wave is longer than X-ray but shorter than light wave?

Figure 12 below shows a simple X ray tube. P1 and P2 are power supplies which generate 6 V and 40,000 V respectively. Show how you will connect these power supplies to the X ray tube so that it starts producing X rays.

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

(i) Draw a labelled graph showing variation of relative intensity of X-rays versus their wavelength λ . Mark on the graph.

(ii) State how the value of can be varied.

An X ray tube is operated at a tube potential of 40,000 V. Calculate :

(i) Kinetic energy of an electron emitted by the filament when it reaches the target / anode.

(ii) Wavelengths of all the X rays emitted by the X ray tube.

Figure 12 below shows a simple X ray tube. P₁ and P₂ are power supplies which generate 6 V and 40,000 V respectively. Show how you will connect these power supplies to the X ray tube so that it starts producing X rays.