Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 12-science Answered

The threshold wavelength of a photosensitive metal is 275nm.calculate the maximum velocity of the photoelectron ejected when light of 180nm is incident on it.    ​​​​​​​How to solve this?? 
Asked by Hemanthrakshitha95 | 03 Mar, 2020, 02:55: PM
answered-by-expert Expert Answer
K E subscript m a x end subscript equals E minus ϕ K E subscript m a x end subscript equals fraction numerator 1240 n m minus e V over denominator 180 n m end fraction minus fraction numerator 1240 n m minus e V over denominator 275 n m end fraction K E subscript m a x end subscript equals 6.88 e V minus 4.55 e V K E subscript m a x end subscript equals 2.33 e V 1 half cross times 9.31 cross times 10 to the power of negative 31 end exponent cross times v squared equals 2.33 cross times 1.6 cross times 10 to the power of negative 19 end exponent v equals 9.05 cross times 10 to the power of 5 m divided by s
Answered by Utkarsh Lokhande | 03 Mar, 2020, 03:55: PM

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
CBSE 12-science - Physics
what is the princple of working laser light?
Asked by mazhartahsildar143 | 07 May, 2020, 01:44: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
The threshold wavelength of a photosensitive metal is 275nm.calculate the maximum velocity of the photoelectron ejected when light of 180nm is incident on it.    ​​​​​​​How to solve this?? 
Asked by Hemanthrakshitha95 | 03 Mar, 2020, 02:55: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
In the wave picture of light, intensity of light is determined by square of the amplitude of wave. What determines the intensity of light in the photon picture of light?
Asked by rohitraman1115 | 08 Jan, 2019, 04:33: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
How would you prove the dual nature of matter?
Asked by Topperlearning User | 21 May, 2014, 09:18: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
What is the nature of matter waves?
Asked by Topperlearning User | 21 May, 2014, 09:41: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Why is the wave nature of particle not observable in daily life?
Asked by Topperlearning User | 19 May, 2014, 04:38: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Are matter waves electromagnetic in nature?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Is a moving particle equivalent to a single wave?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Is the de Broglie wavelength of a photon of an electromagnetic radiation equal to wavelength of a radiation?
Asked by Topperlearning User | 21 May, 2014, 09:49: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
How do matter waves differ from a light wave as regards the velocity of the particle and the wave?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt

Be a Top Scorer in the Exam with Test Series and Test Generator!

Enrol Now
×