Threshold wavelength for photoelectric emission from a material is 5500,Å . Photoelectrons will be

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11.Dual Nature of Radiation and matter

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The threshold wavelength for photoelectric emission from a material is $5500\,\mathring A$. Photoelectrons will be emitted, when this material is illuminated with monochromatic radiation from a

$A.$ $75\,W$ infra-red lamp

$B.$ $10\,W$ infra-red lamp

$C.$ $75\,W$ ultra-violet lamp

$D.$ $10\,W$ ultra-violet lamp

Choose the correct answer from the options given below :

A

$B$ and $C$ only

B

$A$ and $D$ only

C

$C$ only

D

$C$ and $D$ only

(JEE MAIN-2023)

Solution

$\lambda < 5500\, \mathring A$ for photoelectric emission.

$\lambda_{ uv } < 5500\, \mathring A$

Standard 12

Physics

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