Take Class 11 Tuition from the Best Tutors
Affordable fees 1-1 or Group class Flexible Timings Verified Tutors Search in
i. The energy of the photon (eV).
ii. The kinetic energy of the emission.
Iii. The velocity of the photoelectron.
Asked by Razaul Last Modified
Answer 
Energy of photon= hc/λ
h=plank constant = 6.63*
h*c= 1240 eV
λ= wavelength of light
E= /
J
E=3.102 eV
2.)Kinetic energy of emission= energy of photon- work function
=3.102-2.13 eV
= 0.972 eV
3.) kinetic energy of electron = 1/2*m* = 0.972 eV
v=
=5.84 m/s
Saikumar A
Tutor
Energy of photon= hc/λ
h=plank constant = 6.63*
c=speed of light=3*
h*c= 1240 eV
λ= wavelength of light
E= /
joule
E=3.102 eV
2.)Kinetic energy of emission= energy of photon- work function
=3.102-2.13 eV
= 0.972 eV
3.)Velocity of free Electrons
kinetic energy of electron = 1/2*m* = 0.972 eV
v=
=5.84 m/s
read less
Durga Prasad Khatri
Tutor
(1) Energy of the photon (E) = hν = hc/λ = (6.626×10-34 Js×3.0×108 ms-1)/
= 4.97×10-19/1.602×10-19 eV
(2) Kinetic energy of emission (1/2 mv2) = hν- hνo = 3.10-2.13 = 0.97 eV
(3) 1/2 mv2 = 0.97 eV = 0.97×1.602×10-19 J
⇒ 1/2×(9.11×10-31 kg)×v2 = 0.97×1.602×10-19 J
⇒ v2 = 0.341×1012 = 34.1×1010
⇒ v = 5.84×105 ms-1
View 19 more Answers
Related Questions
What is the correct definition and formula of ohms law.?
Suppose some electricity is flowing through a long straight wire without any insulating coating that gives an electric shock to a person at rest relative to the wire on touching it. Is there a speed with which if the person runs along the wire in the direction of current flowing such that he/she does not experience any shock?
Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com
Ask a QuestionRelated Lessons
Recommended Articles
Top Benefits of e-Learning
With the current trend of the world going digital, electronic renaissance is a new movement that is welcomed by the new generation as it helps makes the lives of millions of people easier and convenient. Along with this rapidly changing movement and gaining popularity of Internet, e-Learning is a new tool that emerging...
Read full article >
6 Exam Hall Tips To Follow, For Every Good Student
Appearing for exams could be stressful for students. Even though they might have prepared well, they could suffer from anxiety, tension etc. These are not good for their health and mind. However, following a few exam preparation tips can save them from all these and help them to score good marks. Let’s find out all...
Read full article >
How To Choose The Right School For Children?
Quality education does not only help children to get a successful career and life, but it also hugely contributes to society. The formal education of every child starts from school. Although there are numerous schools, parents find it challenging to choose the right one that would fit their child. It is difficult for them...
Read full article >
5 Engaging Activities For Children To Get...
Learning for every child starts from a very young age. While the formal methods include school curriculums and private lessons, the informal methods include dancing, music, drawing, and various fun-filling activities. Playing games and practising these types of activities helps the children get out of boredom and...
Read full article >
Looking for Class 11 Tuition ?
Learn from the Best Tutors on UrbanPro
Are you a Tutor or Training Institute?
Join UrbanPro Today to find students near youThe best tutors for Class 11 Tuition Classes are on UrbanPro
The best Tutors for Class 11 Tuition Classes are on UrbanPro
17
