X-ray from a Coolidge tube is incident on a thin aluminium foil. The intensity of the X-ray transmitted by the foil is found to be I0. The heating current is increased so as to increase the temperature of the filament. The intensity of the X-ray transmitted by the foil will be.

1.   zero

2.   < I0

3.   I0

4.   > I0

Subtopic:  X-Ray (OLD NCERT) |
 73%
From NCERT

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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

1.  zero

2.  < 0.1 mm

3.  0.1 mm

4.  > 0.1 mm

Subtopic:  X-Ray (OLD NCERT) |
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From NCERT

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For harder X-rays,

(a)  the wavelength is higher
(b)  the intensity is higher
(c)  the frequency is higher
(d)  the photon energy is higher

Choose the correct option 

1. (a), (b) 

2. (b), (c) 

3. (c), (d) 

4. (a), (d)

Subtopic:  X-Ray (OLD NCERT) |
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From NCERT

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Cutoff wavelength of X-rays coming from a Coolidge tube depends on the

(a) target material
(b) accelerating voltage
(c) separation between the target, and the filament
(d) temperature of the filament

Choose the correct option

1. (a), (b) 

2. (b) 

3. (c), (d) 

4. (a), (d) 

Subtopic:  X-Ray (OLD NCERT) |
From NCERT

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When an electron strikes the target in a Coolidge tube, its entire kinetic energy

(a) is converted into a photon
(b) may be converted into a photon
(c) is converted into heat
(d) may be converted into heat

Choose the correct option

1. (a), (b) 

2. (b), (c) 

3. (b), (d) 

4. (a), (d)

Subtopic:  X-Ray (OLD NCERT) |
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From NCERT

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X-ray incident on a material

(a) exerts a force on it
(b) transfers energy to it
(c) transfers momentum to it
(d) transfers impulse to it

Choose the correct option 

1. (a), (b) 

2. (b), (c) 

3. (c), (d) 

4. All of these

Subtopic:  X-Ray (OLD NCERT) |
 69%
From NCERT

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

(a) frequency
(b) energy
(c) penetrating power
(d) method of creation

Choose the correct option 

1. (a), (b) 

2. (b), (c) 

3. (d) 

4. (a), (d)

Subtopic:  X-Ray (OLD NCERT) |
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From NCERT

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The potential difference applied to an X-ray tube is increased. As a result, in the emitted radiation,

(a) the intensity increases
(b) the minimum wavelength increases
(c) the intensity remains unchanged
(d) the minimum wavelength decreases

Choose the correct option 

1. (a), (b) 

2. (b), (c) 

3. (c), (d) 

4. (a), (d) 

Subtopic:  X-Ray (OLD NCERT) |
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From NCERT

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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 aluminium foil, which will allow 50% of the X-ray to pass through, will be

1.   zero

2.   < 0.1 mm 

3.   0.1 mm

4.   > 0.1 mm

Subtopic:  X-Ray (OLD NCERT) |
 71%
From NCERT

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50% of the X-ray coming from a Coolidge tube is able to pass through a 0.1 mm thick aluminum 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

1.  0%

2.  < 50%

3.  50%

4.  > 50%

Subtopic:  X-Ray (OLD NCERT) |
 53%
From NCERT

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