Electron Emission, Photo Electric Effect (Threshol Frequency Stopping Potential)
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Dual nature of radiation and Matter

142009 What is the stopping potential, when a metal surface with work function $1.2 \mathrm{eV}$ is illuminated with light of energy $3 \mathrm{eV}$ ?

1 $2.0 \mathrm{~V}$
2 $1.2 \mathrm{~V}$
3 $1.8 \mathrm{~V}$
4 $1.4 \mathrm{~V}$
MHT-CET 2020
Dual nature of radiation and Matter

142010 In experiment of photoelectric effect, the stopping potential for incident yellow light of wavelength $5890 \AA$ is 4 volt. If the yellow light is replaced by blue light of wavelength $4000 \AA$, the stopping potential is

1 $4 \mathrm{~V}$
2 zero volt
3 more than $4 \mathrm{~V}$
4 less than $4 \mathrm{~V}$
MHT-CET 2020
Dual nature of radiation and Matter

142011 A parallel beam of fast moving electrons is incident perpendicular on a narrow slit. Distance between slit and screen is large. If the speed of the incident electron is increased, then which one of the following statements is correct?

1 The angular width of the central maximum will decrease.
2 The angular width of the central maximum will remain the same.
3 The angular width of the central maximum of the diffraction pattern will increase.
4 Diffraction pattern is not observed on the screen in the case of electrons.
MHT-CET 2020
Dual nature of radiation and Matter

142015 The photo electric effect to take place for a metal, the minimum frequency required is $5.792 \times 10^{14} \mathrm{~Hz}$. A light of wavelength $6000 \AA$ is incident on that metal surface. What is the corresponding frequency of light and will there be photoelectric emissions?
[velocity of light $=3 \times 10^{8} \mathrm{~m} / \mathrm{s}$ ]

1 $5 \times 10^{14}$, yes
2 $2 \times 10^{14}$, no
3 $20 \times 10^{14}$, yes
4 $5 \times 10^{14}$, no
MHT-CET 2020
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Dual nature of radiation and Matter

142009 What is the stopping potential, when a metal surface with work function $1.2 \mathrm{eV}$ is illuminated with light of energy $3 \mathrm{eV}$ ?

1 $2.0 \mathrm{~V}$
2 $1.2 \mathrm{~V}$
3 $1.8 \mathrm{~V}$
4 $1.4 \mathrm{~V}$
MHT-CET 2020
Dual nature of radiation and Matter

142010 In experiment of photoelectric effect, the stopping potential for incident yellow light of wavelength $5890 \AA$ is 4 volt. If the yellow light is replaced by blue light of wavelength $4000 \AA$, the stopping potential is

1 $4 \mathrm{~V}$
2 zero volt
3 more than $4 \mathrm{~V}$
4 less than $4 \mathrm{~V}$
MHT-CET 2020
Dual nature of radiation and Matter

142011 A parallel beam of fast moving electrons is incident perpendicular on a narrow slit. Distance between slit and screen is large. If the speed of the incident electron is increased, then which one of the following statements is correct?

1 The angular width of the central maximum will decrease.
2 The angular width of the central maximum will remain the same.
3 The angular width of the central maximum of the diffraction pattern will increase.
4 Diffraction pattern is not observed on the screen in the case of electrons.
MHT-CET 2020
Dual nature of radiation and Matter

142015 The photo electric effect to take place for a metal, the minimum frequency required is $5.792 \times 10^{14} \mathrm{~Hz}$. A light of wavelength $6000 \AA$ is incident on that metal surface. What is the corresponding frequency of light and will there be photoelectric emissions?
[velocity of light $=3 \times 10^{8} \mathrm{~m} / \mathrm{s}$ ]

1 $5 \times 10^{14}$, yes
2 $2 \times 10^{14}$, no
3 $20 \times 10^{14}$, yes
4 $5 \times 10^{14}$, no
MHT-CET 2020
For More Updates join with Us
Dual nature of radiation and Matter

142009 What is the stopping potential, when a metal surface with work function $1.2 \mathrm{eV}$ is illuminated with light of energy $3 \mathrm{eV}$ ?

1 $2.0 \mathrm{~V}$
2 $1.2 \mathrm{~V}$
3 $1.8 \mathrm{~V}$
4 $1.4 \mathrm{~V}$
MHT-CET 2020
Dual nature of radiation and Matter

142010 In experiment of photoelectric effect, the stopping potential for incident yellow light of wavelength $5890 \AA$ is 4 volt. If the yellow light is replaced by blue light of wavelength $4000 \AA$, the stopping potential is

1 $4 \mathrm{~V}$
2 zero volt
3 more than $4 \mathrm{~V}$
4 less than $4 \mathrm{~V}$
MHT-CET 2020
Dual nature of radiation and Matter

142011 A parallel beam of fast moving electrons is incident perpendicular on a narrow slit. Distance between slit and screen is large. If the speed of the incident electron is increased, then which one of the following statements is correct?

1 The angular width of the central maximum will decrease.
2 The angular width of the central maximum will remain the same.
3 The angular width of the central maximum of the diffraction pattern will increase.
4 Diffraction pattern is not observed on the screen in the case of electrons.
MHT-CET 2020
Dual nature of radiation and Matter

142015 The photo electric effect to take place for a metal, the minimum frequency required is $5.792 \times 10^{14} \mathrm{~Hz}$. A light of wavelength $6000 \AA$ is incident on that metal surface. What is the corresponding frequency of light and will there be photoelectric emissions?
[velocity of light $=3 \times 10^{8} \mathrm{~m} / \mathrm{s}$ ]

1 $5 \times 10^{14}$, yes
2 $2 \times 10^{14}$, no
3 $20 \times 10^{14}$, yes
4 $5 \times 10^{14}$, no
MHT-CET 2020
NEET DIGITAL LIBRARY
Dual nature of radiation and Matter

142009 What is the stopping potential, when a metal surface with work function $1.2 \mathrm{eV}$ is illuminated with light of energy $3 \mathrm{eV}$ ?

1 $2.0 \mathrm{~V}$
2 $1.2 \mathrm{~V}$
3 $1.8 \mathrm{~V}$
4 $1.4 \mathrm{~V}$
MHT-CET 2020
Dual nature of radiation and Matter

142010 In experiment of photoelectric effect, the stopping potential for incident yellow light of wavelength $5890 \AA$ is 4 volt. If the yellow light is replaced by blue light of wavelength $4000 \AA$, the stopping potential is

1 $4 \mathrm{~V}$
2 zero volt
3 more than $4 \mathrm{~V}$
4 less than $4 \mathrm{~V}$
MHT-CET 2020
Dual nature of radiation and Matter

142011 A parallel beam of fast moving electrons is incident perpendicular on a narrow slit. Distance between slit and screen is large. If the speed of the incident electron is increased, then which one of the following statements is correct?

1 The angular width of the central maximum will decrease.
2 The angular width of the central maximum will remain the same.
3 The angular width of the central maximum of the diffraction pattern will increase.
4 Diffraction pattern is not observed on the screen in the case of electrons.
MHT-CET 2020
Dual nature of radiation and Matter

142015 The photo electric effect to take place for a metal, the minimum frequency required is $5.792 \times 10^{14} \mathrm{~Hz}$. A light of wavelength $6000 \AA$ is incident on that metal surface. What is the corresponding frequency of light and will there be photoelectric emissions?
[velocity of light $=3 \times 10^{8} \mathrm{~m} / \mathrm{s}$ ]

1 $5 \times 10^{14}$, yes
2 $2 \times 10^{14}$, no
3 $20 \times 10^{14}$, yes
4 $5 \times 10^{14}$, no
MHT-CET 2020
Join With Us for More Updates