NEET Exam > NEET Questions > The threshold wavelength for photoelectric ef...
Start Learning for Free
The threshold wavelength for photoelectric effect of a metal is 6500 Å. The work function of the metal is approximately
- a)2 eV
- b)1 eV
- c)0.1 eV
- d)3 eV
Correct answer is option 'A'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
The threshold wavelength for photoelectric effect of a metal is 6500 ....
Explanation:
- The threshold wavelength (λ0) for photoelectric effect of a metal is 6500 Å.
- The work function (ϕ) of the metal is given by:
hν = ϕ + KEmax
- where h is Planck's constant, ν is the frequency of incident radiation, KEmax is the maximum kinetic energy of emitted photoelectrons.
- Since λν = c, where c is the speed of light, we can write:
h(c/λ) = ϕ + KEmax
- For photoelectrons emitted at threshold frequency or wavelength, KEmax = 0. Therefore, we get:
h(c/λ0) = ϕ
- Substituting the given values, we get:
6.63 × 10-34 J.s × (3 × 108 m/s) / (6500 × 10-10 m) = ϕ
ϕ = 3.06 eV
- Therefore, the work function of the metal is approximately 3 eV.
- The closest option is A, which is 2 eV. This is because the given value of threshold wavelength is approximate and may not be exact. Also, the work function may depend on the particular sample of the metal.
Free Test
FREE
| Start Free Test |
Community Answer
The threshold wavelength for photoelectric effect of a metal is 6500 ....
Attention NEET Students!
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.
|
Explore Courses for NEET exam
|
|
Similar NEET Doubts
Top Courses for NEETView all
The threshold wavelength for photoelectric effect of a metal is 6500 . The work function of the metal is approximatelya)2 eVb)1 eVc)0.1 eVd)3 eVCorrect answer is option 'A'. Can you explain this answer?
Question Description
The threshold wavelength for photoelectric effect of a metal is 6500 . The work function of the metal is approximatelya)2 eVb)1 eVc)0.1 eVd)3 eVCorrect answer is option 'A'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about The threshold wavelength for photoelectric effect of a metal is 6500 . The work function of the metal is approximatelya)2 eVb)1 eVc)0.1 eVd)3 eVCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The threshold wavelength for photoelectric effect of a metal is 6500 . The work function of the metal is approximatelya)2 eVb)1 eVc)0.1 eVd)3 eVCorrect answer is option 'A'. Can you explain this answer?.
The threshold wavelength for photoelectric effect of a metal is 6500 . The work function of the metal is approximatelya)2 eVb)1 eVc)0.1 eVd)3 eVCorrect answer is option 'A'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about The threshold wavelength for photoelectric effect of a metal is 6500 . The work function of the metal is approximatelya)2 eVb)1 eVc)0.1 eVd)3 eVCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The threshold wavelength for photoelectric effect of a metal is 6500 . The work function of the metal is approximatelya)2 eVb)1 eVc)0.1 eVd)3 eVCorrect answer is option 'A'. Can you explain this answer?.
Solutions for The threshold wavelength for photoelectric effect of a metal is 6500 . The work function of the metal is approximatelya)2 eVb)1 eVc)0.1 eVd)3 eVCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of The threshold wavelength for photoelectric effect of a metal is 6500 . The work function of the metal is approximatelya)2 eVb)1 eVc)0.1 eVd)3 eVCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
The threshold wavelength for photoelectric effect of a metal is 6500 . The work function of the metal is approximatelya)2 eVb)1 eVc)0.1 eVd)3 eVCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for The threshold wavelength for photoelectric effect of a metal is 6500 . The work function of the metal is approximatelya)2 eVb)1 eVc)0.1 eVd)3 eVCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of The threshold wavelength for photoelectric effect of a metal is 6500 . The work function of the metal is approximatelya)2 eVb)1 eVc)0.1 eVd)3 eVCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice The threshold wavelength for photoelectric effect of a metal is 6500 . The work function of the metal is approximatelya)2 eVb)1 eVc)0.1 eVd)3 eVCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice NEET tests.
|
|
Explore Courses for NEET 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