Properties and Uses of X-rays

Author:H C Verma
JEE Main
IMPORTANT

Important Questions on Properties and Uses of X-rays

EASY
IMPORTANT

Consider a photon of continuous X-ray and a photon of characteristic X-ray of the same wavelength. Which of the following is/are different for the two photons ?

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X-ray incident on a material

HARD
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Suppose a monochromatic X-ray beam of wavelength 100 pm is sent through Young's double-slit and the interference pattern is observed on a photographic plate placed 40 cm away from the slit. What should be the separation between the slits so that the successive maxima on the screen are separated by a distance of 0.1 mm?

EASY
IMPORTANT

The stopping potential in a photoelectric experiment is linearly related to the inverse of the wavelength 1λ of the light falling on the cathode. The potential difference applied across an X-ray tube is linearly related to the inverse of the cutoff wavelength 1λ of the X-ray emitted. Show that the slopes of the lines in the two cases are equal and find its value.

EASY
IMPORTANT

Visible light passing through a circular hole forms a diffraction disc of radius 0.1 mm on a screen. If X-ray is passed through the same set-up, the radius of the diffraction disc will be

MEDIUM
IMPORTANT

50% of the X-ray coming from a Coolidge tube is able to pass through a 0.1 mm thick aluminium foil. The potential difference between the target and the filament is increased. The thickness of aluminum foil, which will allow 50% of the X-ray to pass through, will be

MEDIUM
IMPORTANT

50% of the X-ray coming from a Coolidge tube is able to pass through a 0.1 mm thick aluminium foil. If the potential difference between the target and the filament is increased, the fraction of the X-ray passing through the same foil will be

EASY
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X-ray beam can be deflected

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Why is exposure to X-ray injurious to health but exposure to visible light is not when both are electromagnetic waves?

MEDIUM
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Characteristic X-rays may be used to identify the element from which they are coming. Can continuous X-rays be used for this purpose?

EASY
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Can X-rays be used for photoelectric effect?

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X-ray and visible light travel at the same speed in a vacuum. Do they travel at the same speed in the glass?

EASY
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Can X-rays be polarized?