Grade 12Modern Physics

The energy of a photon corresponding to the visible light of maximum wavelength is approximately. Pls explain.

vishwajit pureti

15 Years agoGrade 12

4 Answers

manu saxena

15 Years ago

It is approx. 1.89eV

hemanth k

Approved Tutor Answer15 Years ago

the energy of the photon of visible of maximum wavelength is indirectly the energy of the photon of red part of spectrum of light.. the maximum wave length of this is 750 nm.. now find the energy of it.. answer is 3.2065 * 10^-19 joules..

sabya senapati

15 Years ago

visible light fall in balmers series, so in Rydberg eqn, n1=2, asking maximum wavlength, so smallest transition, hence N2=3, there by get wavlength, and use it in e=hc/L, where l is the wavlength

User

8 Years ago

In photoeletric effect...as we knowWork function (phi)=(hc)/wavelength (lambda)Here work function is the threshold energy which is demanded by the questionAnd maxm wavelength is of red colour is. 750nmHence....E=(hc)/wavelength =12400 angstrom /750 nm =1.65 eVand if calculated in joules= 3.2×10^-19

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The energy of a photon corresponding to the visible light of maximum wavelength is approximately. Pls explain.

vishwajit pureti

4 Answers

manu saxena

hemanth k

sabya senapati

User

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