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Atoms and Nuclei question

2020 · Shift 2 · Q46

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JEE Advanced
Physics
Atoms and Nuclei
2020 · Shift 2 · Q46

Atoms and Nuclei question

2020 · Shift 2 · Q46

JEE AdvancedPhysicsAtoms and NucleiMultiple correct+4 / −2

In an X-ray tube, electrons emitted from a filament (cathode) carrying current I hit a target (anode) at a distance d from the cathode. The target is kept at a potential V higher than the cathode resulting in emission of continuous and characteristic X-rays. If the filament current I is decreased to

{1 \over 2}

, the potential difference V is increased to 2V, and the separation distance d is reduced to

{d \over 2}

, then

A
the cut-off wavelength will reduce to half, and the wavelengths of the characteristic X-rays will remain the same
B
the cut-off wavelength as well as the wavelengths of the characteristic X-rays will remain the same
C
the cut-off wavelength will reduce to half, and the intensities of all the X-rays will decrease
D
the cut-off wavelength will become two times larger, and the intensity of all the X-rays will decrease

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