142602
Solid targets of different elements are bombarded by highly energetic electron beams. The frequency (f) of the characteristic \(\mathrm{X}\)-rays emitted from different targets varies with atomic number \(\mathrm{Z}\) as
1 \(f \propto \sqrt{Z}\)
2 \(f \propto Z^2\)
3 \(f \propto Z\)
4 \(f \propto Z^{3 / 2}\)
Explanation:
B Moseley's law- According to moseley's law, the square root of the frequency of either of the two lines ( \(\mathrm{K}\) and \(\mathrm{L}\) ) in the spectrum is nearly proportional to the atomic number \(Z\) of the excited element \(\mathrm{f}^{\prime 2}=\mathrm{Z}\) \(\mathrm{f}=\mathrm{Z}^2\)
AIIMS-2005
Dual nature of radiation and Matter
142610
Yellow light is used in a single slit diffraction experiment with slit width \(6 \mathrm{~mm}\). If yellow light is replaced by \(\mathrm{X}\) - rays, then the observed pattern will reveal
1 that the central maxima is narrower
2 more number of fringes
3 less number of fringes
4 no diffraction pattern
Explanation:
D For diffraction pattern to be observed, the dimension of silt should be comparable to the wavelength of light. Diffraction is obtained when the slit width is of the order of wavelength of electromagnetic waves (or light). As we know, wavelength of X-rays \((1-100 \AA)\) is veryvery lesser than slit width \((6 \mathrm{~mm})\). Therefore no diffraction pattern will be observed.
CG PET- 2005
Dual nature of radiation and Matter
142634
The minimum wavelength of \(\mathrm{X}\)-rays produced by electrons accelerated by a potential difference of \(V\) volts is
1 \(\frac{\mathrm{eV}}{\mathrm{vc}}\)
2 \(\frac{\mathrm{eV}}{\mathrm{hc}}\)
3 \(\frac{\mathrm{hc}}{\mathrm{eV}}\)
4 \(\frac{\mathrm{h}}{\mathrm{v}}\)
Explanation:
C We know, \(\lambda_{\min }=\frac{\mathrm{hc}}{\mathrm{eV}}\) Where, \(\mathrm{h}=\) Plank's constant \(\mathrm{c}=\) speed of light \(\mathrm{e}=\) charge of electron \(\mathrm{V}=\) Potential difference
AMU-2002
Dual nature of radiation and Matter
142639
According to Moseley's law, the frequency \(v\) of the \(K_a\) line and the atomic number \(Z\) of the element have the relation:
C Moseley's law :- The square root of the frequency of either of the two line \([\mathrm{K}\) and \(\mathrm{L}]\) in the spectrum is nearly proportional to the atomic number \((Z)\) of the excited element \(\sqrt{v} \propto(\mathrm{Z}-\mathrm{b})^2\)
AP EAMCET(Medical)-2005
Dual nature of radiation and Matter
142646
Consider the following statements \(A\) and \(B\) and identify the correct choice in the given answers.
1 Both \(\mathrm{A}\) and \(\mathrm{B}\) are true
2 \(\mathrm{A}\) is true but \(\mathrm{B}\) is false
3 \(A\) is false but \(B\) is true
4 Both A and B are false
Explanation:
D In the Compton effect, a high energy photon collides with loosely bound electron in a material, such as metal. The electron absorber some of the energy of the photon and is ejected from the atom, while the photon loses some of its energy and change direction. The scattered photon has a longer wavelength and lower energy than the original photon. Photoelectric effect cannot takes place without free electron.
142602
Solid targets of different elements are bombarded by highly energetic electron beams. The frequency (f) of the characteristic \(\mathrm{X}\)-rays emitted from different targets varies with atomic number \(\mathrm{Z}\) as
1 \(f \propto \sqrt{Z}\)
2 \(f \propto Z^2\)
3 \(f \propto Z\)
4 \(f \propto Z^{3 / 2}\)
Explanation:
B Moseley's law- According to moseley's law, the square root of the frequency of either of the two lines ( \(\mathrm{K}\) and \(\mathrm{L}\) ) in the spectrum is nearly proportional to the atomic number \(Z\) of the excited element \(\mathrm{f}^{\prime 2}=\mathrm{Z}\) \(\mathrm{f}=\mathrm{Z}^2\)
AIIMS-2005
Dual nature of radiation and Matter
142610
Yellow light is used in a single slit diffraction experiment with slit width \(6 \mathrm{~mm}\). If yellow light is replaced by \(\mathrm{X}\) - rays, then the observed pattern will reveal
1 that the central maxima is narrower
2 more number of fringes
3 less number of fringes
4 no diffraction pattern
Explanation:
D For diffraction pattern to be observed, the dimension of silt should be comparable to the wavelength of light. Diffraction is obtained when the slit width is of the order of wavelength of electromagnetic waves (or light). As we know, wavelength of X-rays \((1-100 \AA)\) is veryvery lesser than slit width \((6 \mathrm{~mm})\). Therefore no diffraction pattern will be observed.
CG PET- 2005
Dual nature of radiation and Matter
142634
The minimum wavelength of \(\mathrm{X}\)-rays produced by electrons accelerated by a potential difference of \(V\) volts is
1 \(\frac{\mathrm{eV}}{\mathrm{vc}}\)
2 \(\frac{\mathrm{eV}}{\mathrm{hc}}\)
3 \(\frac{\mathrm{hc}}{\mathrm{eV}}\)
4 \(\frac{\mathrm{h}}{\mathrm{v}}\)
Explanation:
C We know, \(\lambda_{\min }=\frac{\mathrm{hc}}{\mathrm{eV}}\) Where, \(\mathrm{h}=\) Plank's constant \(\mathrm{c}=\) speed of light \(\mathrm{e}=\) charge of electron \(\mathrm{V}=\) Potential difference
AMU-2002
Dual nature of radiation and Matter
142639
According to Moseley's law, the frequency \(v\) of the \(K_a\) line and the atomic number \(Z\) of the element have the relation:
C Moseley's law :- The square root of the frequency of either of the two line \([\mathrm{K}\) and \(\mathrm{L}]\) in the spectrum is nearly proportional to the atomic number \((Z)\) of the excited element \(\sqrt{v} \propto(\mathrm{Z}-\mathrm{b})^2\)
AP EAMCET(Medical)-2005
Dual nature of radiation and Matter
142646
Consider the following statements \(A\) and \(B\) and identify the correct choice in the given answers.
1 Both \(\mathrm{A}\) and \(\mathrm{B}\) are true
2 \(\mathrm{A}\) is true but \(\mathrm{B}\) is false
3 \(A\) is false but \(B\) is true
4 Both A and B are false
Explanation:
D In the Compton effect, a high energy photon collides with loosely bound electron in a material, such as metal. The electron absorber some of the energy of the photon and is ejected from the atom, while the photon loses some of its energy and change direction. The scattered photon has a longer wavelength and lower energy than the original photon. Photoelectric effect cannot takes place without free electron.
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
Dual nature of radiation and Matter
142602
Solid targets of different elements are bombarded by highly energetic electron beams. The frequency (f) of the characteristic \(\mathrm{X}\)-rays emitted from different targets varies with atomic number \(\mathrm{Z}\) as
1 \(f \propto \sqrt{Z}\)
2 \(f \propto Z^2\)
3 \(f \propto Z\)
4 \(f \propto Z^{3 / 2}\)
Explanation:
B Moseley's law- According to moseley's law, the square root of the frequency of either of the two lines ( \(\mathrm{K}\) and \(\mathrm{L}\) ) in the spectrum is nearly proportional to the atomic number \(Z\) of the excited element \(\mathrm{f}^{\prime 2}=\mathrm{Z}\) \(\mathrm{f}=\mathrm{Z}^2\)
AIIMS-2005
Dual nature of radiation and Matter
142610
Yellow light is used in a single slit diffraction experiment with slit width \(6 \mathrm{~mm}\). If yellow light is replaced by \(\mathrm{X}\) - rays, then the observed pattern will reveal
1 that the central maxima is narrower
2 more number of fringes
3 less number of fringes
4 no diffraction pattern
Explanation:
D For diffraction pattern to be observed, the dimension of silt should be comparable to the wavelength of light. Diffraction is obtained when the slit width is of the order of wavelength of electromagnetic waves (or light). As we know, wavelength of X-rays \((1-100 \AA)\) is veryvery lesser than slit width \((6 \mathrm{~mm})\). Therefore no diffraction pattern will be observed.
CG PET- 2005
Dual nature of radiation and Matter
142634
The minimum wavelength of \(\mathrm{X}\)-rays produced by electrons accelerated by a potential difference of \(V\) volts is
1 \(\frac{\mathrm{eV}}{\mathrm{vc}}\)
2 \(\frac{\mathrm{eV}}{\mathrm{hc}}\)
3 \(\frac{\mathrm{hc}}{\mathrm{eV}}\)
4 \(\frac{\mathrm{h}}{\mathrm{v}}\)
Explanation:
C We know, \(\lambda_{\min }=\frac{\mathrm{hc}}{\mathrm{eV}}\) Where, \(\mathrm{h}=\) Plank's constant \(\mathrm{c}=\) speed of light \(\mathrm{e}=\) charge of electron \(\mathrm{V}=\) Potential difference
AMU-2002
Dual nature of radiation and Matter
142639
According to Moseley's law, the frequency \(v\) of the \(K_a\) line and the atomic number \(Z\) of the element have the relation:
C Moseley's law :- The square root of the frequency of either of the two line \([\mathrm{K}\) and \(\mathrm{L}]\) in the spectrum is nearly proportional to the atomic number \((Z)\) of the excited element \(\sqrt{v} \propto(\mathrm{Z}-\mathrm{b})^2\)
AP EAMCET(Medical)-2005
Dual nature of radiation and Matter
142646
Consider the following statements \(A\) and \(B\) and identify the correct choice in the given answers.
1 Both \(\mathrm{A}\) and \(\mathrm{B}\) are true
2 \(\mathrm{A}\) is true but \(\mathrm{B}\) is false
3 \(A\) is false but \(B\) is true
4 Both A and B are false
Explanation:
D In the Compton effect, a high energy photon collides with loosely bound electron in a material, such as metal. The electron absorber some of the energy of the photon and is ejected from the atom, while the photon loses some of its energy and change direction. The scattered photon has a longer wavelength and lower energy than the original photon. Photoelectric effect cannot takes place without free electron.
142602
Solid targets of different elements are bombarded by highly energetic electron beams. The frequency (f) of the characteristic \(\mathrm{X}\)-rays emitted from different targets varies with atomic number \(\mathrm{Z}\) as
1 \(f \propto \sqrt{Z}\)
2 \(f \propto Z^2\)
3 \(f \propto Z\)
4 \(f \propto Z^{3 / 2}\)
Explanation:
B Moseley's law- According to moseley's law, the square root of the frequency of either of the two lines ( \(\mathrm{K}\) and \(\mathrm{L}\) ) in the spectrum is nearly proportional to the atomic number \(Z\) of the excited element \(\mathrm{f}^{\prime 2}=\mathrm{Z}\) \(\mathrm{f}=\mathrm{Z}^2\)
AIIMS-2005
Dual nature of radiation and Matter
142610
Yellow light is used in a single slit diffraction experiment with slit width \(6 \mathrm{~mm}\). If yellow light is replaced by \(\mathrm{X}\) - rays, then the observed pattern will reveal
1 that the central maxima is narrower
2 more number of fringes
3 less number of fringes
4 no diffraction pattern
Explanation:
D For diffraction pattern to be observed, the dimension of silt should be comparable to the wavelength of light. Diffraction is obtained when the slit width is of the order of wavelength of electromagnetic waves (or light). As we know, wavelength of X-rays \((1-100 \AA)\) is veryvery lesser than slit width \((6 \mathrm{~mm})\). Therefore no diffraction pattern will be observed.
CG PET- 2005
Dual nature of radiation and Matter
142634
The minimum wavelength of \(\mathrm{X}\)-rays produced by electrons accelerated by a potential difference of \(V\) volts is
1 \(\frac{\mathrm{eV}}{\mathrm{vc}}\)
2 \(\frac{\mathrm{eV}}{\mathrm{hc}}\)
3 \(\frac{\mathrm{hc}}{\mathrm{eV}}\)
4 \(\frac{\mathrm{h}}{\mathrm{v}}\)
Explanation:
C We know, \(\lambda_{\min }=\frac{\mathrm{hc}}{\mathrm{eV}}\) Where, \(\mathrm{h}=\) Plank's constant \(\mathrm{c}=\) speed of light \(\mathrm{e}=\) charge of electron \(\mathrm{V}=\) Potential difference
AMU-2002
Dual nature of radiation and Matter
142639
According to Moseley's law, the frequency \(v\) of the \(K_a\) line and the atomic number \(Z\) of the element have the relation:
C Moseley's law :- The square root of the frequency of either of the two line \([\mathrm{K}\) and \(\mathrm{L}]\) in the spectrum is nearly proportional to the atomic number \((Z)\) of the excited element \(\sqrt{v} \propto(\mathrm{Z}-\mathrm{b})^2\)
AP EAMCET(Medical)-2005
Dual nature of radiation and Matter
142646
Consider the following statements \(A\) and \(B\) and identify the correct choice in the given answers.
1 Both \(\mathrm{A}\) and \(\mathrm{B}\) are true
2 \(\mathrm{A}\) is true but \(\mathrm{B}\) is false
3 \(A\) is false but \(B\) is true
4 Both A and B are false
Explanation:
D In the Compton effect, a high energy photon collides with loosely bound electron in a material, such as metal. The electron absorber some of the energy of the photon and is ejected from the atom, while the photon loses some of its energy and change direction. The scattered photon has a longer wavelength and lower energy than the original photon. Photoelectric effect cannot takes place without free electron.
142602
Solid targets of different elements are bombarded by highly energetic electron beams. The frequency (f) of the characteristic \(\mathrm{X}\)-rays emitted from different targets varies with atomic number \(\mathrm{Z}\) as
1 \(f \propto \sqrt{Z}\)
2 \(f \propto Z^2\)
3 \(f \propto Z\)
4 \(f \propto Z^{3 / 2}\)
Explanation:
B Moseley's law- According to moseley's law, the square root of the frequency of either of the two lines ( \(\mathrm{K}\) and \(\mathrm{L}\) ) in the spectrum is nearly proportional to the atomic number \(Z\) of the excited element \(\mathrm{f}^{\prime 2}=\mathrm{Z}\) \(\mathrm{f}=\mathrm{Z}^2\)
AIIMS-2005
Dual nature of radiation and Matter
142610
Yellow light is used in a single slit diffraction experiment with slit width \(6 \mathrm{~mm}\). If yellow light is replaced by \(\mathrm{X}\) - rays, then the observed pattern will reveal
1 that the central maxima is narrower
2 more number of fringes
3 less number of fringes
4 no diffraction pattern
Explanation:
D For diffraction pattern to be observed, the dimension of silt should be comparable to the wavelength of light. Diffraction is obtained when the slit width is of the order of wavelength of electromagnetic waves (or light). As we know, wavelength of X-rays \((1-100 \AA)\) is veryvery lesser than slit width \((6 \mathrm{~mm})\). Therefore no diffraction pattern will be observed.
CG PET- 2005
Dual nature of radiation and Matter
142634
The minimum wavelength of \(\mathrm{X}\)-rays produced by electrons accelerated by a potential difference of \(V\) volts is
1 \(\frac{\mathrm{eV}}{\mathrm{vc}}\)
2 \(\frac{\mathrm{eV}}{\mathrm{hc}}\)
3 \(\frac{\mathrm{hc}}{\mathrm{eV}}\)
4 \(\frac{\mathrm{h}}{\mathrm{v}}\)
Explanation:
C We know, \(\lambda_{\min }=\frac{\mathrm{hc}}{\mathrm{eV}}\) Where, \(\mathrm{h}=\) Plank's constant \(\mathrm{c}=\) speed of light \(\mathrm{e}=\) charge of electron \(\mathrm{V}=\) Potential difference
AMU-2002
Dual nature of radiation and Matter
142639
According to Moseley's law, the frequency \(v\) of the \(K_a\) line and the atomic number \(Z\) of the element have the relation:
C Moseley's law :- The square root of the frequency of either of the two line \([\mathrm{K}\) and \(\mathrm{L}]\) in the spectrum is nearly proportional to the atomic number \((Z)\) of the excited element \(\sqrt{v} \propto(\mathrm{Z}-\mathrm{b})^2\)
AP EAMCET(Medical)-2005
Dual nature of radiation and Matter
142646
Consider the following statements \(A\) and \(B\) and identify the correct choice in the given answers.
1 Both \(\mathrm{A}\) and \(\mathrm{B}\) are true
2 \(\mathrm{A}\) is true but \(\mathrm{B}\) is false
3 \(A\) is false but \(B\) is true
4 Both A and B are false
Explanation:
D In the Compton effect, a high energy photon collides with loosely bound electron in a material, such as metal. The electron absorber some of the energy of the photon and is ejected from the atom, while the photon loses some of its energy and change direction. The scattered photon has a longer wavelength and lower energy than the original photon. Photoelectric effect cannot takes place without free electron.