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The light sensitive compound on most pho...

The light sensitive compound on most photographic films is silver bromide AgBr. A film is exposed when the light energy of dissociation of AgBr is `10^(5)Jmol^(-1)`. For a photon that is just able to dissociate a molecule of AgBr, the photon energy is

A

1.04 eV

B

2.08 eV

C

3.12 eV

D

4.16 eV

Text Solution

Verified by Experts

The correct Answer is:
A
Energy of dissociation,
`E_S=10^(5)Jmol^(-1)`
Photon energy, `E_p=(E_S)/(N_a)=(10^(5))/(6.02xx10^(23))`
`=1.66xx10^(-19)J=1.04eV`
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