JEE Exam > JEE Questions > The photon emitted in n = 3 to n = 1 transit...
Start Learning for Free
The photon emitted in n = 3 to n = 1 transition in He+ hits a photosensitive surface of threshold wavelength 6000 A°. The photoelectrons emitted will have __________.
- a)a minimum wavelength of (approx.) 2.0 A° associated with it
- b)a stopping potential of (approx) 38.5 V
- c)photoelectrons that cannot be emitted
- d)photoelectron that will be emitted in 10-10 seconds time
Correct answer is option 'A,B,D'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
The photon emitted in n = 3 to n = 1 transition in He+ hits a photose...
For He+, transition is from n = 3 to n = 1,
Energy emitted = E2 - E1= 4 (13.6 - 3.4)= 40.8 eV
Work function 
. The maximum K.E. of electron = 40.8 - 2.3 = 38.5 eV
. The maximum K.E. of electron = 40.8 - 2.3 = 38.5 eVStopping potential = 38.5 V
According to the de-Broglie concept of matter waves, the wavelength associated with electron will be,
The time interval between the incidence of photon and the ejection of the photoelectron is approximately 10-10 seconds, which is an instantaneous process.
Free Test
FREE
| Start Free Test |
Community Answer
The photon emitted in n = 3 to n = 1 transition in He+ hits a photose...
Explanation:
When an electron in an atom makes a transition from a higher energy level to a lower energy level, it releases a photon with a specific wavelength. In this case, the photon emitted in the n=3 to n=1 transition in He has a wavelength of 328 nm (or 3280 A°).
Photoelectric Effect:
When a photon hits a photosensitive surface, it can eject an electron from the surface. This is known as the photoelectric effect. The energy of the photon must be greater than the work function of the surface (i.e. the minimum energy required to eject an electron) in order for the electron to be ejected.
Threshold wavelength:
For a given surface, there is a minimum wavelength (known as the threshold wavelength) of photons that can eject an electron from the surface. Any photons with a wavelength greater than the threshold wavelength will not be able to eject an electron.
In this case, the threshold wavelength of the photosensitive surface is 6000 A°. Any photons with a wavelength greater than 6000 A° will not be able to eject an electron from the surface.
Photoelectrons:
When an electron is ejected from a photosensitive surface, it is known as a photoelectron. The energy of the photoelectron is equal to the energy of the photon minus the work function of the surface.
Minimum wavelength of photoelectrons:
If the photon has enough energy to eject an electron, the photoelectron will have a minimum wavelength associated with it. This minimum wavelength is given by the de Broglie wavelength of the electron, which is given by λ = h/p, where h is Planck's constant and p is the momentum of the electron.
Stopping potential:
If a voltage is applied to the photosensitive surface, it can be used to stop the photoelectrons from reaching a detector. The minimum voltage required to stop the photoelectrons is known as the stopping potential.
Answer:
Therefore, the photoelectrons emitted in this case will have:
- a minimum wavelength of (approx.) 2.0 A° associated with it (as calculated from the de Broglie wavelength of the electron)
- a stopping potential of (approx) 38.5 V (which can be calculated from the energy of the photon and the work function of the surface)
- photoelectrons that will be emitted in 10-10 seconds time (as this is a characteristic time scale for the photoelectric effect)
When an electron in an atom makes a transition from a higher energy level to a lower energy level, it releases a photon with a specific wavelength. In this case, the photon emitted in the n=3 to n=1 transition in He has a wavelength of 328 nm (or 3280 A°).
Photoelectric Effect:
When a photon hits a photosensitive surface, it can eject an electron from the surface. This is known as the photoelectric effect. The energy of the photon must be greater than the work function of the surface (i.e. the minimum energy required to eject an electron) in order for the electron to be ejected.
Threshold wavelength:
For a given surface, there is a minimum wavelength (known as the threshold wavelength) of photons that can eject an electron from the surface. Any photons with a wavelength greater than the threshold wavelength will not be able to eject an electron.
In this case, the threshold wavelength of the photosensitive surface is 6000 A°. Any photons with a wavelength greater than 6000 A° will not be able to eject an electron from the surface.
Photoelectrons:
When an electron is ejected from a photosensitive surface, it is known as a photoelectron. The energy of the photoelectron is equal to the energy of the photon minus the work function of the surface.
Minimum wavelength of photoelectrons:
If the photon has enough energy to eject an electron, the photoelectron will have a minimum wavelength associated with it. This minimum wavelength is given by the de Broglie wavelength of the electron, which is given by λ = h/p, where h is Planck's constant and p is the momentum of the electron.
Stopping potential:
If a voltage is applied to the photosensitive surface, it can be used to stop the photoelectrons from reaching a detector. The minimum voltage required to stop the photoelectrons is known as the stopping potential.
Answer:
Therefore, the photoelectrons emitted in this case will have:
- a minimum wavelength of (approx.) 2.0 A° associated with it (as calculated from the de Broglie wavelength of the electron)
- a stopping potential of (approx) 38.5 V (which can be calculated from the energy of the photon and the work function of the surface)
- photoelectrons that will be emitted in 10-10 seconds time (as this is a characteristic time scale for the photoelectric effect)
Attention JEE Students!
To make sure you are not studying endlessly, EduRev has designed JEE study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in JEE.
|
Explore Courses for JEE exam
|
|
Top Courses for JEEView all
The photon emitted in n = 3 to n = 1 transition in He+ hits a photosensitive surface of threshold wavelength 6000 A°. The photoelectrons emitted will have __________.a)a minimum wavelength of (approx.) 2.0 A° associated with itb)a stopping potential of (approx) 38.5 Vc)photoelectrons that cannot be emittedd)photoelectron that will be emitted in 10-10 seconds timeCorrect answer is option 'A,B,D'. Can you explain this answer?
Question Description
The photon emitted in n = 3 to n = 1 transition in He+ hits a photosensitive surface of threshold wavelength 6000 A°. The photoelectrons emitted will have __________.a)a minimum wavelength of (approx.) 2.0 A° associated with itb)a stopping potential of (approx) 38.5 Vc)photoelectrons that cannot be emittedd)photoelectron that will be emitted in 10-10 seconds timeCorrect answer is option 'A,B,D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about The photon emitted in n = 3 to n = 1 transition in He+ hits a photosensitive surface of threshold wavelength 6000 A°. The photoelectrons emitted will have __________.a)a minimum wavelength of (approx.) 2.0 A° associated with itb)a stopping potential of (approx) 38.5 Vc)photoelectrons that cannot be emittedd)photoelectron that will be emitted in 10-10 seconds timeCorrect answer is option 'A,B,D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The photon emitted in n = 3 to n = 1 transition in He+ hits a photosensitive surface of threshold wavelength 6000 A°. The photoelectrons emitted will have __________.a)a minimum wavelength of (approx.) 2.0 A° associated with itb)a stopping potential of (approx) 38.5 Vc)photoelectrons that cannot be emittedd)photoelectron that will be emitted in 10-10 seconds timeCorrect answer is option 'A,B,D'. Can you explain this answer?.
The photon emitted in n = 3 to n = 1 transition in He+ hits a photosensitive surface of threshold wavelength 6000 A°. The photoelectrons emitted will have __________.a)a minimum wavelength of (approx.) 2.0 A° associated with itb)a stopping potential of (approx) 38.5 Vc)photoelectrons that cannot be emittedd)photoelectron that will be emitted in 10-10 seconds timeCorrect answer is option 'A,B,D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about The photon emitted in n = 3 to n = 1 transition in He+ hits a photosensitive surface of threshold wavelength 6000 A°. The photoelectrons emitted will have __________.a)a minimum wavelength of (approx.) 2.0 A° associated with itb)a stopping potential of (approx) 38.5 Vc)photoelectrons that cannot be emittedd)photoelectron that will be emitted in 10-10 seconds timeCorrect answer is option 'A,B,D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The photon emitted in n = 3 to n = 1 transition in He+ hits a photosensitive surface of threshold wavelength 6000 A°. The photoelectrons emitted will have __________.a)a minimum wavelength of (approx.) 2.0 A° associated with itb)a stopping potential of (approx) 38.5 Vc)photoelectrons that cannot be emittedd)photoelectron that will be emitted in 10-10 seconds timeCorrect answer is option 'A,B,D'. Can you explain this answer?.
Solutions for The photon emitted in n = 3 to n = 1 transition in He+ hits a photosensitive surface of threshold wavelength 6000 A°. The photoelectrons emitted will have __________.a)a minimum wavelength of (approx.) 2.0 A° associated with itb)a stopping potential of (approx) 38.5 Vc)photoelectrons that cannot be emittedd)photoelectron that will be emitted in 10-10 seconds timeCorrect answer is option 'A,B,D'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
Here you can find the meaning of The photon emitted in n = 3 to n = 1 transition in He+ hits a photosensitive surface of threshold wavelength 6000 A°. The photoelectrons emitted will have __________.a)a minimum wavelength of (approx.) 2.0 A° associated with itb)a stopping potential of (approx) 38.5 Vc)photoelectrons that cannot be emittedd)photoelectron that will be emitted in 10-10 seconds timeCorrect answer is option 'A,B,D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
The photon emitted in n = 3 to n = 1 transition in He+ hits a photosensitive surface of threshold wavelength 6000 A°. The photoelectrons emitted will have __________.a)a minimum wavelength of (approx.) 2.0 A° associated with itb)a stopping potential of (approx) 38.5 Vc)photoelectrons that cannot be emittedd)photoelectron that will be emitted in 10-10 seconds timeCorrect answer is option 'A,B,D'. Can you explain this answer?, a detailed solution for The photon emitted in n = 3 to n = 1 transition in He+ hits a photosensitive surface of threshold wavelength 6000 A°. The photoelectrons emitted will have __________.a)a minimum wavelength of (approx.) 2.0 A° associated with itb)a stopping potential of (approx) 38.5 Vc)photoelectrons that cannot be emittedd)photoelectron that will be emitted in 10-10 seconds timeCorrect answer is option 'A,B,D'. Can you explain this answer? has been provided alongside types of The photon emitted in n = 3 to n = 1 transition in He+ hits a photosensitive surface of threshold wavelength 6000 A°. The photoelectrons emitted will have __________.a)a minimum wavelength of (approx.) 2.0 A° associated with itb)a stopping potential of (approx) 38.5 Vc)photoelectrons that cannot be emittedd)photoelectron that will be emitted in 10-10 seconds timeCorrect answer is option 'A,B,D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice The photon emitted in n = 3 to n = 1 transition in He+ hits a photosensitive surface of threshold wavelength 6000 A°. The photoelectrons emitted will have __________.a)a minimum wavelength of (approx.) 2.0 A° associated with itb)a stopping potential of (approx) 38.5 Vc)photoelectrons that cannot be emittedd)photoelectron that will be emitted in 10-10 seconds timeCorrect answer is option 'A,B,D'. Can you explain this answer? tests, examples and also practice JEE tests.
|
|
Explore Courses for JEE exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup