The wavelength of a photon needed to rem

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Target Exam

CUET

Subject

Physics

Chapter

Dual Nature of Radiation and Matter

Question:

The wavelength of a photon needed to remove a proton from a nucleus which is bound to the nucleus with 1 MeV energy is nearly :

Options:

1.24 x 10 nm

1.24 x 10^-3 nm

1.24 nm

1.24 x 10^-6 nm

Correct Answer:

1.24 x 10^-3 nm

Explanation:

Use : E = $\frac{h c}{\lambda}$

E = 1 MeV

$\Rightarrow \lambda = \frac{hc}{E} = \frac{1240}{10^6}nm = 1.24 \times 10^{-3} nm$