Einstein Equation

Einstein's Photoelectric Equation is based on the Conservation of Energy: $Energy of incident photon = Work Function + Max Kinetic Energy of electron$ $h f = Φ + K_{ma x}$ $h f = h f_{0} + K_{ma x}$ $K_{ma x} = h f - h f_{0} = h (f - f_{0})$ where $h$ is Planck's constant, $f$ is incident frequency, and $f_{0}$ is threshold frequency.

This easy difficulty physics question is from the chapter dual nature of radiation and matter, covering the topic of einstein equation. It appeared in the 2025 exam.

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Einstein Equation

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A metal surface of work function $1.0 eV$ is illuminated separately by light of wavelength $...

In a photoelectric experiment the stopping potential rises from $0.50 V$ to $2.15 V$ ...

Inside a reactor a neutron of mass $1.67 \times 1 0^{- 27} kg$ has been slowed to thermal equili...

Identical electrons are accelerated from rest, one through a potential difference of $50 V$ ...

Green light of wavelength $5 \times 1 0^{- 7} m$ from a laser pointer is incident normally on a ...

Ultraviolet light of wavelength $400 nm$ illuminates a metal whose work function is $2.0\ \t...

Monochromatic radiation of wavelength $248 nm$ falls on a photosensitive cathode whose work ...