142628
What determines the hardness of X-rays obtained from the Coolidge tube?
1 Current in the filament
2 Pressure of air in the tube
3 Nature of target
4 Potential difference between cathode and target
Explanation:
D The hardness of X-rays depends upon the voltage on which it is operated. Hence, it can be increased or decreased by controlling the potential voltage.
SRMJEEE - 2013
Dual nature of radiation and Matter
142629
The speed of X-rays is the same as that of visible light. Hence its wavelength is
1 same as that of visible light
2 larger than that of visible light
3 smaller than that of visible light
4 equal to that of visible light
Explanation:
C The wavelength of the X-rays from \(0.01 \mathrm{~nm}\) to \(10 \mathrm{~nm}\) while the wavelength of the visible light ranges from \(400 \mathrm{~nm}\) to \(700 \mathrm{~nm}\) Hence, wavelength of X-rays smaller than that of visible light.
SRMJEEE - 2015
Dual nature of radiation and Matter
142631
Light travels faster in air than that in glass. This is accordance with
1 Wave theory of light
2 Corpuscular theory of light
3 Neither (a) nor (b)
4 Both (a) and (b)
Explanation:
A Huygens wave theory of light postulate that light travel faster in air than that in glass.
JIPMER-2013
Dual nature of radiation and Matter
142635
When ultraviolet rays are incident on metal plate, the photoelectric effect does not occur. it occur by incidence of
1 infrared rays
2 X-rays
3 radiowaves
4 light waves
Explanation:
B For photoelectric effect, the wavelength of incident ray should be less than threshold value. Hence, X-ray have wavelength less than ultraviolet rays which is less than threshold value.
142628
What determines the hardness of X-rays obtained from the Coolidge tube?
1 Current in the filament
2 Pressure of air in the tube
3 Nature of target
4 Potential difference between cathode and target
Explanation:
D The hardness of X-rays depends upon the voltage on which it is operated. Hence, it can be increased or decreased by controlling the potential voltage.
SRMJEEE - 2013
Dual nature of radiation and Matter
142629
The speed of X-rays is the same as that of visible light. Hence its wavelength is
1 same as that of visible light
2 larger than that of visible light
3 smaller than that of visible light
4 equal to that of visible light
Explanation:
C The wavelength of the X-rays from \(0.01 \mathrm{~nm}\) to \(10 \mathrm{~nm}\) while the wavelength of the visible light ranges from \(400 \mathrm{~nm}\) to \(700 \mathrm{~nm}\) Hence, wavelength of X-rays smaller than that of visible light.
SRMJEEE - 2015
Dual nature of radiation and Matter
142631
Light travels faster in air than that in glass. This is accordance with
1 Wave theory of light
2 Corpuscular theory of light
3 Neither (a) nor (b)
4 Both (a) and (b)
Explanation:
A Huygens wave theory of light postulate that light travel faster in air than that in glass.
JIPMER-2013
Dual nature of radiation and Matter
142635
When ultraviolet rays are incident on metal plate, the photoelectric effect does not occur. it occur by incidence of
1 infrared rays
2 X-rays
3 radiowaves
4 light waves
Explanation:
B For photoelectric effect, the wavelength of incident ray should be less than threshold value. Hence, X-ray have wavelength less than ultraviolet rays which is less than threshold value.
142628
What determines the hardness of X-rays obtained from the Coolidge tube?
1 Current in the filament
2 Pressure of air in the tube
3 Nature of target
4 Potential difference between cathode and target
Explanation:
D The hardness of X-rays depends upon the voltage on which it is operated. Hence, it can be increased or decreased by controlling the potential voltage.
SRMJEEE - 2013
Dual nature of radiation and Matter
142629
The speed of X-rays is the same as that of visible light. Hence its wavelength is
1 same as that of visible light
2 larger than that of visible light
3 smaller than that of visible light
4 equal to that of visible light
Explanation:
C The wavelength of the X-rays from \(0.01 \mathrm{~nm}\) to \(10 \mathrm{~nm}\) while the wavelength of the visible light ranges from \(400 \mathrm{~nm}\) to \(700 \mathrm{~nm}\) Hence, wavelength of X-rays smaller than that of visible light.
SRMJEEE - 2015
Dual nature of radiation and Matter
142631
Light travels faster in air than that in glass. This is accordance with
1 Wave theory of light
2 Corpuscular theory of light
3 Neither (a) nor (b)
4 Both (a) and (b)
Explanation:
A Huygens wave theory of light postulate that light travel faster in air than that in glass.
JIPMER-2013
Dual nature of radiation and Matter
142635
When ultraviolet rays are incident on metal plate, the photoelectric effect does not occur. it occur by incidence of
1 infrared rays
2 X-rays
3 radiowaves
4 light waves
Explanation:
B For photoelectric effect, the wavelength of incident ray should be less than threshold value. Hence, X-ray have wavelength less than ultraviolet rays which is less than threshold value.
142628
What determines the hardness of X-rays obtained from the Coolidge tube?
1 Current in the filament
2 Pressure of air in the tube
3 Nature of target
4 Potential difference between cathode and target
Explanation:
D The hardness of X-rays depends upon the voltage on which it is operated. Hence, it can be increased or decreased by controlling the potential voltage.
SRMJEEE - 2013
Dual nature of radiation and Matter
142629
The speed of X-rays is the same as that of visible light. Hence its wavelength is
1 same as that of visible light
2 larger than that of visible light
3 smaller than that of visible light
4 equal to that of visible light
Explanation:
C The wavelength of the X-rays from \(0.01 \mathrm{~nm}\) to \(10 \mathrm{~nm}\) while the wavelength of the visible light ranges from \(400 \mathrm{~nm}\) to \(700 \mathrm{~nm}\) Hence, wavelength of X-rays smaller than that of visible light.
SRMJEEE - 2015
Dual nature of radiation and Matter
142631
Light travels faster in air than that in glass. This is accordance with
1 Wave theory of light
2 Corpuscular theory of light
3 Neither (a) nor (b)
4 Both (a) and (b)
Explanation:
A Huygens wave theory of light postulate that light travel faster in air than that in glass.
JIPMER-2013
Dual nature of radiation and Matter
142635
When ultraviolet rays are incident on metal plate, the photoelectric effect does not occur. it occur by incidence of
1 infrared rays
2 X-rays
3 radiowaves
4 light waves
Explanation:
B For photoelectric effect, the wavelength of incident ray should be less than threshold value. Hence, X-ray have wavelength less than ultraviolet rays which is less than threshold value.
