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PhysicsModern PhysicsPhotoelectric effectMedium2 minPYQ_2013

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For photoelectric emission from certain metal the cut-off frequency is $v$ . If radiation of frequency $2 v$ impinges on the metal plate, the maximum possible velocity of the emitted electron will be ( $m$ is the electron mass)NEET 2013 (All India)

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$As \frac{1}{2} m v_{m a x}^{2} = h v \Rightarrow v_{m a x}^{2} = \frac{2 mN}{m} ∴ v_{m a x} = \frac{2 h V}{m}$

Stream:NEETSubject:PhysicsTopic:Modern PhysicsSubtopic:Photoelectric effect

⏱ 2mℹ️ Source: PYQ_2013

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