GEO · 2025 Science & Technology › Physics & ChemistryA threshold frequency for photoelectric emission in copper is 1.1×10¹⁵ Hz. When the light of frequency 1.2×10¹⁵ Hz is incident on the copper surface, the maximum energy of emitted particles would be (Planck's constant is 6.62×10⁻³⁴ J·s and the charge on the electron is 1.6×10⁻¹⁹ C)
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