Ask a Doubt
Request a call back

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

CBSE Class 12-science Answered

16. The work function for cesium is 19 3.43 10  J. What is the kinetic energy of an electron liberated by radiation of 550 nm? What is stopping voltage? How many electrons are generated if the total energy absorbed at 550 nm is 1.00 10 J 3  ?
question image
Asked by pariveshnath2004 | 04 Aug, 2020, 02:45: PM
answered-by-expert Expert Answer
K i n e t i c space e n e r g y space o f space a n space e l e c t r o n equals E minus W o r k space f u n c t i o n E n e r g y space o f space r a d i a t e d space l i g h t comma E equals fraction numerator h c over denominator lambda end fraction E equals fraction numerator 6.626 cross times 10 to the power of negative 34 end exponent cross times 3 cross times 10 to the power of 8 over denominator 550 cross times 10 to the power of negative 9 end exponent end fraction equals 3.61 cross times 10 to the power of negative 19 end exponent J K E equals 3.61 cross times 10 to the power of negative 19 end exponent J minus 3.43 cross times 10 to the power of negative 19 end exponent J K E equals 0.18 cross times 10 to the power of negative 19 end exponent J K E equals e V subscript 0 W h e r e space V subscript 0 space i s space t h e space s t o p p i n g space v o l t a g e 0.55 cross times 10 to the power of negative 19 end exponent J equals 1.6 cross times 10 to the power of negative 19 end exponent V subscript 0 V subscript 0 equals 0.113 V
Answered by Utkarsh Lokhande | 06 Aug, 2020, 05:52: PM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 12-science - Physics
superposition principle
Asked by talulu | 01 May, 2024, 05:14: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
question no. 7
question image
Asked by kanishkg511 | 30 Apr, 2024, 07:25: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
pls someone solve this
question image
Asked by sahoobanita89 | 30 Apr, 2024, 05:10: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Electric sheilding 
Asked by divakar.9124 | 27 Apr, 2024, 10:42: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
explain this concept
question image
Asked by panneer1766 | 24 Apr, 2024, 01:52: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
A dumbbell consists of two masses A and B each of mass m joined by a light rod of length l with mass B attached to a suspension point O by a light rod of length l as shown in figure. Find the minimum required speed with which mass A to be projected horizontally so that the system completes the vertical circular motion.
question image
Asked by artabandhusahu85 | 24 Apr, 2024, 12:07: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
What is charge?
Asked by niharvijayvargiya5 | 23 Apr, 2024, 06:40: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
please resolve with good explanation
question image
Asked by kulhariabhijeet | 21 Apr, 2024, 02:39: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
what are ghost particles please answer how is that not able to interact with other subatomic particles ..?is that faster than photons?
Asked by mohapatraswetalina88 | 21 Apr, 2024, 12:18: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
if breakdown voltage of each capacitor is 40v ,then maximum applied voltage Vmax will be
Asked by aishaisha091098 | 19 Apr, 2024, 04:54: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×