Compton Effect

At $θ = 0^{\circ}$ : $cos 0^{\circ} = 1 ⟹ Δ λ = 0$ .
At $θ = 9 0^{\circ}$ : $cos 9 0^{\circ} = 0 ⟹ Δ λ = \frac{h}{m _{e} c}$ (Compton Wavelength).
At $θ = 18 0^{\circ}$ : $cos 18 0^{\circ} = - 1 ⟹ Δ λ = \frac{2 h}{m _{e} c}$ . This is the maximum possible shift, occurring when the photon is back-scattered.

This medium difficulty physics question is from the chapter dual nature of radiation and matter, covering the topic of compton effect. It appeared in the 2025 exam.

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Compton Effect

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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 $2.15 V$ ...

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

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