QBManager

Dual nature of radiation and Matter

142636 Which of the following is not the property of cathode rays?

1 It produces heating effect

2 It does not deflect in electric field

3 Its casts shadow

4 It produces fluorescence

AIPMT - 2002

Dual nature of radiation and Matter

142637 The figure shows a plot of photocurrent versus anode potential for a photo sensitive surface for three different radiations. Which one of the following is a correct statement ?

Retarding potential Anode potential

1 Curves a and b represent incident radiations of different frequencies and different intensities

2 Curves a and b represent incident radiations of same frequency but of different intensities

3 Curves b and c represent incident radiations of different frequencies and different intensities

4 Curves b and c represent incident radiations of same frequency having same intensity

Explanation:

B Curves a and b represent incident radiations of same frequency but of different intensities.

From the given graph, the retarding potential is equal of curves $a$ and $b$ therefore their frequency is same.
Also, their photocurrents are different therefore they have different intensities.

AIPMT - 2009

Dual nature of radiation and Matter

142640 An X-ray tube is operated at a constant potential difference and it is required to get $X$ ray of wavelength, not less than 0.1 nanometer. Then, the potential difference in $k V$ is:
$(h = 6.63 \times 10^{- 34} j - s,$
$c = 3 \times 10^{8} m / s)$
$e = 1.6 \times 10^{- 19} C$

1 24.8

2 12.4

3 6.2

4 3.1

Explanation:

B Given, $λ_{min} = 0.1 nm = 0.1 \times 10^{- 9} m$ plank's constant $h = 6.63 \times 10^{34} j - s$
Speed of light $(c) = 3 \times 10^{8} m / s$
Charge on electron(e) $= 1.6 \times 10^{- 19} C$
We know, Petential difference
$V = \frac{h c}{λ_{min} e}$
$V = \frac{6.63 \times 10^{- 34} \times 3 \times 10^{8}}{0.1 \times 10^{- 9} \times 1.6 \times 10^{- 19}}$
$V = 124.31 \times 10^{2} V$
$V = 12.4 kV$

AP EAMCET(Medical)-2003

Dual nature of radiation and Matter

142641 Monochromatic X-rays of wavelength $0.124 \AA$ under go Compton scattering through an angle $60^{\circ}$ from a carbon block, The wavelength of the seattered $X$ - rays in $\hat{A}$ , is:
$(Taken \frac{h}{m_{6} C} = 0.024 A)$

1 0.112

2 0.136

3 0.156

4 0.182

Explanation:

B Given, $λ_{i} = 0.124 \AA$
and $θ = 60^{\circ}$
from Compton formula
$λ_{f} - λ_{i} = \frac{h}{m_{0} c} (1 - \cos θ)$
$λ_{f} - 0.124 = 0.024 \times (1 - \cos 60^{\circ})$
$λ_{f} = 0.124 + 0.024 \times \frac{1}{2}$
$λ_{f} = 0.136 \AA$

AP EAMCET(Medical)-2002

Dual nature of radiation and Matter

142642 If Planck's constant is given as $6.4 \times 10^{- 14} J$ -s and electron charge is $1.6 \times 10^{- 19} C$ , the maximum wavelength of $X$ -ray emitted, when a $10 keV$ electron is completely stopped by a target, is

1

6.2 \AA

2

3.4 \AA

3

1.8 \AA

4

1.2 \AA

Explanation:

D Given, plank's Constant $(h) = 6.4 \times 10^{- 24} J - s$
Electron charge $(e) = 1.6 \times 10^{- 19} C$
Energy of electron $(E) = 10 keV = 10 \times 10^{3} \times 1.6 \times 10^{- 19} J$
Speed of light $(c) = 3 \times 10^{8} m / s$
$λ_{max} = \frac{hc}{E} = \frac{6.4 \times 10^{- 34} \times 3 \times 10^{8}}{10 \times 10^{5} \times 1.6 \times 10^{- 19}}$
$λ_{max} = 1.2 \times 10^{- 10} m$
$λ_{max} = 1.2 \AA$

EAMCET-1993

Dual nature of radiation and Matter

142636 Which of the following is not the property of cathode rays?

1 It produces heating effect

2 It does not deflect in electric field

3 Its casts shadow

4 It produces fluorescence

AIPMT - 2002

Dual nature of radiation and Matter

142637 The figure shows a plot of photocurrent versus anode potential for a photo sensitive surface for three different radiations. Which one of the following is a correct statement ?

Retarding potential Anode potential

1 Curves a and b represent incident radiations of different frequencies and different intensities

2 Curves a and b represent incident radiations of same frequency but of different intensities

3 Curves b and c represent incident radiations of different frequencies and different intensities

4 Curves b and c represent incident radiations of same frequency having same intensity

Explanation:

B Curves a and b represent incident radiations of same frequency but of different intensities.

From the given graph, the retarding potential is equal of curves $a$ and $b$ therefore their frequency is same.
Also, their photocurrents are different therefore they have different intensities.

AIPMT - 2009

Dual nature of radiation and Matter

142640 An X-ray tube is operated at a constant potential difference and it is required to get $X$ ray of wavelength, not less than 0.1 nanometer. Then, the potential difference in $k V$ is:
$(h = 6.63 \times 10^{- 34} j - s,$
$c = 3 \times 10^{8} m / s)$
$e = 1.6 \times 10^{- 19} C$

1 24.8

2 12.4

3 6.2

4 3.1

Explanation:

B Given, $λ_{min} = 0.1 nm = 0.1 \times 10^{- 9} m$ plank's constant $h = 6.63 \times 10^{34} j - s$
Speed of light $(c) = 3 \times 10^{8} m / s$
Charge on electron(e) $= 1.6 \times 10^{- 19} C$
We know, Petential difference
$V = \frac{h c}{λ_{min} e}$
$V = \frac{6.63 \times 10^{- 34} \times 3 \times 10^{8}}{0.1 \times 10^{- 9} \times 1.6 \times 10^{- 19}}$
$V = 124.31 \times 10^{2} V$
$V = 12.4 kV$

AP EAMCET(Medical)-2003

Dual nature of radiation and Matter

142641 Monochromatic X-rays of wavelength $0.124 \AA$ under go Compton scattering through an angle $60^{\circ}$ from a carbon block, The wavelength of the seattered $X$ - rays in $\hat{A}$ , is:
$(Taken \frac{h}{m_{6} C} = 0.024 A)$

1 0.112

2 0.136

3 0.156

4 0.182

Explanation:

B Given, $λ_{i} = 0.124 \AA$
and $θ = 60^{\circ}$
from Compton formula
$λ_{f} - λ_{i} = \frac{h}{m_{0} c} (1 - \cos θ)$
$λ_{f} - 0.124 = 0.024 \times (1 - \cos 60^{\circ})$
$λ_{f} = 0.124 + 0.024 \times \frac{1}{2}$
$λ_{f} = 0.136 \AA$

AP EAMCET(Medical)-2002

Dual nature of radiation and Matter

142642 If Planck's constant is given as $6.4 \times 10^{- 14} J$ -s and electron charge is $1.6 \times 10^{- 19} C$ , the maximum wavelength of $X$ -ray emitted, when a $10 keV$ electron is completely stopped by a target, is

1

6.2 \AA

2

3.4 \AA

3

1.8 \AA

4

1.2 \AA

Explanation:

D Given, plank's Constant $(h) = 6.4 \times 10^{- 24} J - s$
Electron charge $(e) = 1.6 \times 10^{- 19} C$
Energy of electron $(E) = 10 keV = 10 \times 10^{3} \times 1.6 \times 10^{- 19} J$
Speed of light $(c) = 3 \times 10^{8} m / s$
$λ_{max} = \frac{hc}{E} = \frac{6.4 \times 10^{- 34} \times 3 \times 10^{8}}{10 \times 10^{5} \times 1.6 \times 10^{- 19}}$
$λ_{max} = 1.2 \times 10^{- 10} m$
$λ_{max} = 1.2 \AA$

EAMCET-1993

Dual nature of radiation and Matter

142636 Which of the following is not the property of cathode rays?

1 It produces heating effect

2 It does not deflect in electric field

3 Its casts shadow

4 It produces fluorescence

AIPMT - 2002

Dual nature of radiation and Matter

142637 The figure shows a plot of photocurrent versus anode potential for a photo sensitive surface for three different radiations. Which one of the following is a correct statement ?

Retarding potential Anode potential

1 Curves a and b represent incident radiations of different frequencies and different intensities

2 Curves a and b represent incident radiations of same frequency but of different intensities

3 Curves b and c represent incident radiations of different frequencies and different intensities

4 Curves b and c represent incident radiations of same frequency having same intensity

Explanation:

B Curves a and b represent incident radiations of same frequency but of different intensities.

From the given graph, the retarding potential is equal of curves $a$ and $b$ therefore their frequency is same.
Also, their photocurrents are different therefore they have different intensities.

AIPMT - 2009

Dual nature of radiation and Matter

142640 An X-ray tube is operated at a constant potential difference and it is required to get $X$ ray of wavelength, not less than 0.1 nanometer. Then, the potential difference in $k V$ is:
$(h = 6.63 \times 10^{- 34} j - s,$
$c = 3 \times 10^{8} m / s)$
$e = 1.6 \times 10^{- 19} C$

1 24.8

2 12.4

3 6.2

4 3.1

Explanation:

B Given, $λ_{min} = 0.1 nm = 0.1 \times 10^{- 9} m$ plank's constant $h = 6.63 \times 10^{34} j - s$
Speed of light $(c) = 3 \times 10^{8} m / s$
Charge on electron(e) $= 1.6 \times 10^{- 19} C$
We know, Petential difference
$V = \frac{h c}{λ_{min} e}$
$V = \frac{6.63 \times 10^{- 34} \times 3 \times 10^{8}}{0.1 \times 10^{- 9} \times 1.6 \times 10^{- 19}}$
$V = 124.31 \times 10^{2} V$
$V = 12.4 kV$

AP EAMCET(Medical)-2003

Dual nature of radiation and Matter

142641 Monochromatic X-rays of wavelength $0.124 \AA$ under go Compton scattering through an angle $60^{\circ}$ from a carbon block, The wavelength of the seattered $X$ - rays in $\hat{A}$ , is:
$(Taken \frac{h}{m_{6} C} = 0.024 A)$

1 0.112

2 0.136

3 0.156

4 0.182

Explanation:

B Given, $λ_{i} = 0.124 \AA$
and $θ = 60^{\circ}$
from Compton formula
$λ_{f} - λ_{i} = \frac{h}{m_{0} c} (1 - \cos θ)$
$λ_{f} - 0.124 = 0.024 \times (1 - \cos 60^{\circ})$
$λ_{f} = 0.124 + 0.024 \times \frac{1}{2}$
$λ_{f} = 0.136 \AA$

AP EAMCET(Medical)-2002

Dual nature of radiation and Matter

142642 If Planck's constant is given as $6.4 \times 10^{- 14} J$ -s and electron charge is $1.6 \times 10^{- 19} C$ , the maximum wavelength of $X$ -ray emitted, when a $10 keV$ electron is completely stopped by a target, is

1

6.2 \AA

2

3.4 \AA

3

1.8 \AA

4

1.2 \AA

Explanation:

D Given, plank's Constant $(h) = 6.4 \times 10^{- 24} J - s$
Electron charge $(e) = 1.6 \times 10^{- 19} C$
Energy of electron $(E) = 10 keV = 10 \times 10^{3} \times 1.6 \times 10^{- 19} J$
Speed of light $(c) = 3 \times 10^{8} m / s$
$λ_{max} = \frac{hc}{E} = \frac{6.4 \times 10^{- 34} \times 3 \times 10^{8}}{10 \times 10^{5} \times 1.6 \times 10^{- 19}}$
$λ_{max} = 1.2 \times 10^{- 10} m$
$λ_{max} = 1.2 \AA$

EAMCET-1993

Dual nature of radiation and Matter

142636 Which of the following is not the property of cathode rays?

1 It produces heating effect

2 It does not deflect in electric field

3 Its casts shadow

4 It produces fluorescence

AIPMT - 2002

Dual nature of radiation and Matter

142637 The figure shows a plot of photocurrent versus anode potential for a photo sensitive surface for three different radiations. Which one of the following is a correct statement ?

Retarding potential Anode potential

1 Curves a and b represent incident radiations of different frequencies and different intensities

2 Curves a and b represent incident radiations of same frequency but of different intensities

3 Curves b and c represent incident radiations of different frequencies and different intensities

4 Curves b and c represent incident radiations of same frequency having same intensity

Explanation:

B Curves a and b represent incident radiations of same frequency but of different intensities.

From the given graph, the retarding potential is equal of curves $a$ and $b$ therefore their frequency is same.
Also, their photocurrents are different therefore they have different intensities.

AIPMT - 2009

Dual nature of radiation and Matter

142640 An X-ray tube is operated at a constant potential difference and it is required to get $X$ ray of wavelength, not less than 0.1 nanometer. Then, the potential difference in $k V$ is:
$(h = 6.63 \times 10^{- 34} j - s,$
$c = 3 \times 10^{8} m / s)$
$e = 1.6 \times 10^{- 19} C$

1 24.8

2 12.4

3 6.2

4 3.1

Explanation:

B Given, $λ_{min} = 0.1 nm = 0.1 \times 10^{- 9} m$ plank's constant $h = 6.63 \times 10^{34} j - s$
Speed of light $(c) = 3 \times 10^{8} m / s$
Charge on electron(e) $= 1.6 \times 10^{- 19} C$
We know, Petential difference
$V = \frac{h c}{λ_{min} e}$
$V = \frac{6.63 \times 10^{- 34} \times 3 \times 10^{8}}{0.1 \times 10^{- 9} \times 1.6 \times 10^{- 19}}$
$V = 124.31 \times 10^{2} V$
$V = 12.4 kV$

AP EAMCET(Medical)-2003

Dual nature of radiation and Matter

142641 Monochromatic X-rays of wavelength $0.124 \AA$ under go Compton scattering through an angle $60^{\circ}$ from a carbon block, The wavelength of the seattered $X$ - rays in $\hat{A}$ , is:
$(Taken \frac{h}{m_{6} C} = 0.024 A)$

1 0.112

2 0.136

3 0.156

4 0.182

Explanation:

B Given, $λ_{i} = 0.124 \AA$
and $θ = 60^{\circ}$
from Compton formula
$λ_{f} - λ_{i} = \frac{h}{m_{0} c} (1 - \cos θ)$
$λ_{f} - 0.124 = 0.024 \times (1 - \cos 60^{\circ})$
$λ_{f} = 0.124 + 0.024 \times \frac{1}{2}$
$λ_{f} = 0.136 \AA$

AP EAMCET(Medical)-2002

Dual nature of radiation and Matter

142642 If Planck's constant is given as $6.4 \times 10^{- 14} J$ -s and electron charge is $1.6 \times 10^{- 19} C$ , the maximum wavelength of $X$ -ray emitted, when a $10 keV$ electron is completely stopped by a target, is

1

6.2 \AA

2

3.4 \AA

3

1.8 \AA

4

1.2 \AA

Explanation:

D Given, plank's Constant $(h) = 6.4 \times 10^{- 24} J - s$
Electron charge $(e) = 1.6 \times 10^{- 19} C$
Energy of electron $(E) = 10 keV = 10 \times 10^{3} \times 1.6 \times 10^{- 19} J$
Speed of light $(c) = 3 \times 10^{8} m / s$
$λ_{max} = \frac{hc}{E} = \frac{6.4 \times 10^{- 34} \times 3 \times 10^{8}}{10 \times 10^{5} \times 1.6 \times 10^{- 19}}$
$λ_{max} = 1.2 \times 10^{- 10} m$
$λ_{max} = 1.2 \AA$

EAMCET-1993

Dual nature of radiation and Matter

142636 Which of the following is not the property of cathode rays?

1 It produces heating effect

2 It does not deflect in electric field

3 Its casts shadow

4 It produces fluorescence

AIPMT - 2002

Dual nature of radiation and Matter

142637 The figure shows a plot of photocurrent versus anode potential for a photo sensitive surface for three different radiations. Which one of the following is a correct statement ?

Retarding potential Anode potential

1 Curves a and b represent incident radiations of different frequencies and different intensities

2 Curves a and b represent incident radiations of same frequency but of different intensities

3 Curves b and c represent incident radiations of different frequencies and different intensities

4 Curves b and c represent incident radiations of same frequency having same intensity

Explanation:

B Curves a and b represent incident radiations of same frequency but of different intensities.

From the given graph, the retarding potential is equal of curves $a$ and $b$ therefore their frequency is same.
Also, their photocurrents are different therefore they have different intensities.

AIPMT - 2009

Dual nature of radiation and Matter

142640 An X-ray tube is operated at a constant potential difference and it is required to get $X$ ray of wavelength, not less than 0.1 nanometer. Then, the potential difference in $k V$ is:
$(h = 6.63 \times 10^{- 34} j - s,$
$c = 3 \times 10^{8} m / s)$
$e = 1.6 \times 10^{- 19} C$

1 24.8

2 12.4

3 6.2

4 3.1

Explanation:

B Given, $λ_{min} = 0.1 nm = 0.1 \times 10^{- 9} m$ plank's constant $h = 6.63 \times 10^{34} j - s$
Speed of light $(c) = 3 \times 10^{8} m / s$
Charge on electron(e) $= 1.6 \times 10^{- 19} C$
We know, Petential difference
$V = \frac{h c}{λ_{min} e}$
$V = \frac{6.63 \times 10^{- 34} \times 3 \times 10^{8}}{0.1 \times 10^{- 9} \times 1.6 \times 10^{- 19}}$
$V = 124.31 \times 10^{2} V$
$V = 12.4 kV$

AP EAMCET(Medical)-2003

Dual nature of radiation and Matter

142641 Monochromatic X-rays of wavelength $0.124 \AA$ under go Compton scattering through an angle $60^{\circ}$ from a carbon block, The wavelength of the seattered $X$ - rays in $\hat{A}$ , is:
$(Taken \frac{h}{m_{6} C} = 0.024 A)$

1 0.112

2 0.136

3 0.156

4 0.182

Explanation:

B Given, $λ_{i} = 0.124 \AA$
and $θ = 60^{\circ}$
from Compton formula
$λ_{f} - λ_{i} = \frac{h}{m_{0} c} (1 - \cos θ)$
$λ_{f} - 0.124 = 0.024 \times (1 - \cos 60^{\circ})$
$λ_{f} = 0.124 + 0.024 \times \frac{1}{2}$
$λ_{f} = 0.136 \AA$

AP EAMCET(Medical)-2002

Dual nature of radiation and Matter

142642 If Planck's constant is given as $6.4 \times 10^{- 14} J$ -s and electron charge is $1.6 \times 10^{- 19} C$ , the maximum wavelength of $X$ -ray emitted, when a $10 keV$ electron is completely stopped by a target, is

1

6.2 \AA

2

3.4 \AA

3

1.8 \AA

4

1.2 \AA

Explanation:

D Given, plank's Constant $(h) = 6.4 \times 10^{- 24} J - s$
Electron charge $(e) = 1.6 \times 10^{- 19} C$
Energy of electron $(E) = 10 keV = 10 \times 10^{3} \times 1.6 \times 10^{- 19} J$
Speed of light $(c) = 3 \times 10^{8} m / s$
$λ_{max} = \frac{hc}{E} = \frac{6.4 \times 10^{- 34} \times 3 \times 10^{8}}{10 \times 10^{5} \times 1.6 \times 10^{- 19}}$
$λ_{max} = 1.2 \times 10^{- 10} m$
$λ_{max} = 1.2 \AA$

EAMCET-1993

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