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Dual Nature of Radiation question

2016 · 9 Apr · Shift 1 · Q58

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JEE Main
Physics
Dual Nature of Radiation
2016 · 9 Apr · Shift 1 · Q58

Dual Nature of Radiation question

2016 · 9 Apr · Shift 1 · Q58

JEE MainPhysicsDual Nature of RadiationMCQ+4 / −1

When photons of wavelength

{\lambda _1}

are incident on an isolated sphere, the corresponding stopping potential is found to be V. When photons of wavelength

{\lambda _2}

are used, the corresponding stopping potential was thrice that of the above value. If light of wavelength

{\lambda _3}

is used then find the stopping potential for this case :

A
${{hc} \over e}\left[ {{1 \over {{\lambda _3}}} - {1 \over {{\lambda _2}}} - {1 \over {{\lambda _1}}}} \right]$
B
${{hc} \over e}\left[ {{1 \over {{\lambda _3}}} + {1 \over {{\lambda _2}}} - {1 \over {{\lambda _1}}}} \right]$
C
${{hc} \over e}\left[ {{1 \over {{\lambda _3}}} + {1 \over {2{\lambda _2}}} - {3 \over {2{\lambda _1}}}} \right]$
D
${{hc} \over e}\left[ {{1 \over {{\lambda _3}}} + {1 \over {2{\lambda _2}}} - {1 \over {{\lambda _1}}}} \right]$

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