CBSE Class 11-science Answered
A light of wavelength 3 × 10 ^- 7 strikes a metal surface. the energy of incident light in electron volt is
Asked by arushidabhade | 13 Aug, 2019, 13:31: PM
Given
Wavelength, λ = 3×10−7 m
We know,
Energy, E
![equals hc over straight lambda
equals fraction numerator 6.636 cross times 10 to the power of negative 34 end exponent cross times 3 cross times 10 to the power of 8 over denominator 3 cross times 10 to the power of negative 7 end exponent end fraction
equals 6.6 cross times 10 to the power of negative 19 end exponent space straight J](https://images.topperlearning.com/topper/tinymce/cache/1914dc9c75c87e78728dc5620f874ed4.png)
1 eV = 1.6 × 10−19 J
6.63× 10−19 J = 4.14 eV
Answered by Varsha | 13 Aug, 2019, 16:16: PM
Concept Videos
CBSE 11-science - Chemistry
The de Broglie wavelength of an electron travelling with 20% of velocity of light is nearly equal to
Asked by arushidabhade | 13 Aug, 2019, 13:32: PM
CBSE 11-science - Chemistry
Asked by arushidabhade | 13 Aug, 2019, 13:31: PM
CBSE 11-science - Chemistry
Asked by arushidabhade | 13 Aug, 2019, 13:14: PM
CBSE 11-science - Chemistry
Asked by arushidabhade | 08 Jul, 2019, 20:07: PM
CBSE 11-science - Chemistry
Asked by arushidabhade | 08 Jul, 2019, 20:05: PM
CBSE 11-science - Chemistry
Asked by bjayanta | 15 Apr, 2019, 10:39: AM
CBSE 11-science - Chemistry
Asked by Topperlearning User | 04 Jun, 2014, 13:23: PM
CBSE 11-science - Chemistry
Asked by Topperlearning User | 04 Jun, 2014, 13:23: PM
CBSE 11-science - Chemistry
Asked by Topperlearning User | 15 Apr, 2015, 18:22: PM
CBSE 11-science - Chemistry
Asked by Topperlearning User | 15 Apr, 2015, 18:32: PM