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

142066 A 5 W source emits monochromatic light of wavelength 5000\AA. When placed 0.5 m away, it liberates photoelectrons from a photosensitive metallic surface. When the source is moved to a distance of 1.0 m, the number of photoelectrons liberated will be reduced by a factor of

1 4
2 8
3 16
4 2
Dual nature of radiation and Matter

142070 If e/m of electron is 1.76×1011Ckg1 and the stopping potential is 0.71 V, then the maximum velocity of the photo-electron is

1 150kms1
2 200kms1
3 500kms1
4 250kms1
5 100kms1
Dual nature of radiation and Matter

142073 In a photo electric effect experiment the maximum kinetic energy of the emitted electrons is 1eV for incoming radiation of frequency v0 and 3eV for incoming radiation of frequency 3v0/2. What is the maximum kinetic energy of the electrons emitted for incoming radiations of frequency 9v0/4 ?

1 3eV
2 4.5eV
3 6eV
4 9eV
Dual nature of radiation and Matter

142081 Assertion: The energy (E) and momentum (p) of a photon are related by p=E/c
Reason: The photon behaves like a particle.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason in not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
Dual nature of radiation and Matter

142066 A 5 W source emits monochromatic light of wavelength 5000\AA. When placed 0.5 m away, it liberates photoelectrons from a photosensitive metallic surface. When the source is moved to a distance of 1.0 m, the number of photoelectrons liberated will be reduced by a factor of

1 4
2 8
3 16
4 2
Dual nature of radiation and Matter

142070 If e/m of electron is 1.76×1011Ckg1 and the stopping potential is 0.71 V, then the maximum velocity of the photo-electron is

1 150kms1
2 200kms1
3 500kms1
4 250kms1
5 100kms1
Dual nature of radiation and Matter

142073 In a photo electric effect experiment the maximum kinetic energy of the emitted electrons is 1eV for incoming radiation of frequency v0 and 3eV for incoming radiation of frequency 3v0/2. What is the maximum kinetic energy of the electrons emitted for incoming radiations of frequency 9v0/4 ?

1 3eV
2 4.5eV
3 6eV
4 9eV
Dual nature of radiation and Matter

142081 Assertion: The energy (E) and momentum (p) of a photon are related by p=E/c
Reason: The photon behaves like a particle.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason in not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
Dual nature of radiation and Matter

142066 A 5 W source emits monochromatic light of wavelength 5000\AA. When placed 0.5 m away, it liberates photoelectrons from a photosensitive metallic surface. When the source is moved to a distance of 1.0 m, the number of photoelectrons liberated will be reduced by a factor of

1 4
2 8
3 16
4 2
Dual nature of radiation and Matter

142070 If e/m of electron is 1.76×1011Ckg1 and the stopping potential is 0.71 V, then the maximum velocity of the photo-electron is

1 150kms1
2 200kms1
3 500kms1
4 250kms1
5 100kms1
Dual nature of radiation and Matter

142073 In a photo electric effect experiment the maximum kinetic energy of the emitted electrons is 1eV for incoming radiation of frequency v0 and 3eV for incoming radiation of frequency 3v0/2. What is the maximum kinetic energy of the electrons emitted for incoming radiations of frequency 9v0/4 ?

1 3eV
2 4.5eV
3 6eV
4 9eV
Dual nature of radiation and Matter

142081 Assertion: The energy (E) and momentum (p) of a photon are related by p=E/c
Reason: The photon behaves like a particle.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason in not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
Dual nature of radiation and Matter

142066 A 5 W source emits monochromatic light of wavelength 5000\AA. When placed 0.5 m away, it liberates photoelectrons from a photosensitive metallic surface. When the source is moved to a distance of 1.0 m, the number of photoelectrons liberated will be reduced by a factor of

1 4
2 8
3 16
4 2
Dual nature of radiation and Matter

142070 If e/m of electron is 1.76×1011Ckg1 and the stopping potential is 0.71 V, then the maximum velocity of the photo-electron is

1 150kms1
2 200kms1
3 500kms1
4 250kms1
5 100kms1
Dual nature of radiation and Matter

142073 In a photo electric effect experiment the maximum kinetic energy of the emitted electrons is 1eV for incoming radiation of frequency v0 and 3eV for incoming radiation of frequency 3v0/2. What is the maximum kinetic energy of the electrons emitted for incoming radiations of frequency 9v0/4 ?

1 3eV
2 4.5eV
3 6eV
4 9eV
Dual nature of radiation and Matter

142081 Assertion: The energy (E) and momentum (p) of a photon are related by p=E/c
Reason: The photon behaves like a particle.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason in not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here