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

142062 A light beam consists of two types of photons. In one type, each photon has energy $2 \mathrm{eV}$ and in other type, each photon has energy $3 \mathrm{eV}$. The light beam is incident on a photoelectric material of work function $1 \mathrm{eV}$. The maximum kinetic energy of emitted photoelectron is

1 $2 \mathrm{eV}$
2 $3 \mathrm{eV}$
3 $4 \mathrm{eV}$
4 $1 \mathrm{eV}$
Dual nature of radiation and Matter

142063 When a light of wavelength $400 \mathrm{~nm}$ is incident on the cathode of a photocell, the stopping potential recorded is $6 \mathrm{~V}$. If the wavelength of the incident light is increased to $600 \mathrm{~nm}$. then the new stopping potential is

1 $4.5 \mathrm{~V}$
2 $4 \mathrm{~V}$
3 $5.97 \mathrm{~V}$
4 $4.97 \mathrm{~V}$
Dual nature of radiation and Matter

142065 The photoelectric threshold of metal is $2000 \AA$. The energy of the electrons ejected from the surface by ultraviolet light of wavelength $1500 \AA$ is

1 $2.0 \mathrm{eV}$
2 $1.5 \mathrm{eV}$
3 $15 \mathrm{eV}$
4 $150 \mathrm{eV}$
Dual nature of radiation and Matter

142058 Assertion (A): Threshold frequency of a photo metal depends on the intensity of incident light. Reason (r): Greater is the intensity of incident light greater is the photoelectric current.

1 Both (A) and (R) are true and (R) is the correct explanation of (A)
2 Both (A) and (R( are true and (R) is not the correct explanation of (A)
3 (A) is not true, but (R) is not true
4 (A) is not true, but (R) is true
Dual nature of radiation and Matter

142062 A light beam consists of two types of photons. In one type, each photon has energy $2 \mathrm{eV}$ and in other type, each photon has energy $3 \mathrm{eV}$. The light beam is incident on a photoelectric material of work function $1 \mathrm{eV}$. The maximum kinetic energy of emitted photoelectron is

1 $2 \mathrm{eV}$
2 $3 \mathrm{eV}$
3 $4 \mathrm{eV}$
4 $1 \mathrm{eV}$
Dual nature of radiation and Matter

142063 When a light of wavelength $400 \mathrm{~nm}$ is incident on the cathode of a photocell, the stopping potential recorded is $6 \mathrm{~V}$. If the wavelength of the incident light is increased to $600 \mathrm{~nm}$. then the new stopping potential is

1 $4.5 \mathrm{~V}$
2 $4 \mathrm{~V}$
3 $5.97 \mathrm{~V}$
4 $4.97 \mathrm{~V}$
Dual nature of radiation and Matter

142065 The photoelectric threshold of metal is $2000 \AA$. The energy of the electrons ejected from the surface by ultraviolet light of wavelength $1500 \AA$ is

1 $2.0 \mathrm{eV}$
2 $1.5 \mathrm{eV}$
3 $15 \mathrm{eV}$
4 $150 \mathrm{eV}$
Dual nature of radiation and Matter

142058 Assertion (A): Threshold frequency of a photo metal depends on the intensity of incident light. Reason (r): Greater is the intensity of incident light greater is the photoelectric current.

1 Both (A) and (R) are true and (R) is the correct explanation of (A)
2 Both (A) and (R( are true and (R) is not the correct explanation of (A)
3 (A) is not true, but (R) is not true
4 (A) is not true, but (R) is true
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
Dual nature of radiation and Matter

142062 A light beam consists of two types of photons. In one type, each photon has energy $2 \mathrm{eV}$ and in other type, each photon has energy $3 \mathrm{eV}$. The light beam is incident on a photoelectric material of work function $1 \mathrm{eV}$. The maximum kinetic energy of emitted photoelectron is

1 $2 \mathrm{eV}$
2 $3 \mathrm{eV}$
3 $4 \mathrm{eV}$
4 $1 \mathrm{eV}$
Dual nature of radiation and Matter

142063 When a light of wavelength $400 \mathrm{~nm}$ is incident on the cathode of a photocell, the stopping potential recorded is $6 \mathrm{~V}$. If the wavelength of the incident light is increased to $600 \mathrm{~nm}$. then the new stopping potential is

1 $4.5 \mathrm{~V}$
2 $4 \mathrm{~V}$
3 $5.97 \mathrm{~V}$
4 $4.97 \mathrm{~V}$
Dual nature of radiation and Matter

142065 The photoelectric threshold of metal is $2000 \AA$. The energy of the electrons ejected from the surface by ultraviolet light of wavelength $1500 \AA$ is

1 $2.0 \mathrm{eV}$
2 $1.5 \mathrm{eV}$
3 $15 \mathrm{eV}$
4 $150 \mathrm{eV}$
Dual nature of radiation and Matter

142058 Assertion (A): Threshold frequency of a photo metal depends on the intensity of incident light. Reason (r): Greater is the intensity of incident light greater is the photoelectric current.

1 Both (A) and (R) are true and (R) is the correct explanation of (A)
2 Both (A) and (R( are true and (R) is not the correct explanation of (A)
3 (A) is not true, but (R) is not true
4 (A) is not true, but (R) is true
Dual nature of radiation and Matter

142062 A light beam consists of two types of photons. In one type, each photon has energy $2 \mathrm{eV}$ and in other type, each photon has energy $3 \mathrm{eV}$. The light beam is incident on a photoelectric material of work function $1 \mathrm{eV}$. The maximum kinetic energy of emitted photoelectron is

1 $2 \mathrm{eV}$
2 $3 \mathrm{eV}$
3 $4 \mathrm{eV}$
4 $1 \mathrm{eV}$
Dual nature of radiation and Matter

142063 When a light of wavelength $400 \mathrm{~nm}$ is incident on the cathode of a photocell, the stopping potential recorded is $6 \mathrm{~V}$. If the wavelength of the incident light is increased to $600 \mathrm{~nm}$. then the new stopping potential is

1 $4.5 \mathrm{~V}$
2 $4 \mathrm{~V}$
3 $5.97 \mathrm{~V}$
4 $4.97 \mathrm{~V}$
Dual nature of radiation and Matter

142065 The photoelectric threshold of metal is $2000 \AA$. The energy of the electrons ejected from the surface by ultraviolet light of wavelength $1500 \AA$ is

1 $2.0 \mathrm{eV}$
2 $1.5 \mathrm{eV}$
3 $15 \mathrm{eV}$
4 $150 \mathrm{eV}$
Dual nature of radiation and Matter

142058 Assertion (A): Threshold frequency of a photo metal depends on the intensity of incident light. Reason (r): Greater is the intensity of incident light greater is the photoelectric current.

1 Both (A) and (R) are true and (R) is the correct explanation of (A)
2 Both (A) and (R( are true and (R) is not the correct explanation of (A)
3 (A) is not true, but (R) is not true
4 (A) is not true, but (R) is true