Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
Home  >>  EAMCET  >>  Chemistry
0 votes

In an experiment on photoelectric emission from a metallic surface, wavelength of incident light is $2 \times 10^{-7}$ m and stopping potential is 2.5 V. The threshold frequency of the metal (in Hz) approximately (charge of electron $e=1.6 \times 10^{-19}C.$ Planck's constant $h= 6.6 \times 10^{34}\;J-s)$

\[\begin {array} {1 1} (a)\;12 \times 10^{15} & \quad (b)\;9 \times 10^{15} \\ (c)\;9 \times 10^{14} & \quad (d)\;12 \times 10^{13} \end {array}\]

Can you answer this question?

1 Answer

0 votes
$(c)\;9 \times 10^{14}$
answered Nov 7, 2013 by pady_1

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, AIPMT Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App