Light of wavelength λ₁ and λ₂ are falling on two metal surface A and B. For wavelength λ₁ electron ejected from both the surfaces and for wavelength λ₂ electron ejected from only surface B. On the basis of these facts which one of the following is a false statement:
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Question

Light of wavelength λ₁ and λ₂ are falling on two metal surface A and B. For wavelength λ₁ electron ejected from both the surfaces and for wavelength λ₂ electron ejected from only surface B. On the basis of these facts which one of the following is a false statement:

Select all that apply

G1 Physics · Accepted Answer

For λ₁ both metals emit, so λ₁ is below both threshold wavelengths. For λ₂ only metal B emits, so λ₂ is below B's threshold but above A's threshold. These inequalities determine the relative work functions and threshold wavelengths. Comparing with the statements, B, C and D are false. Correct answer: B, C, D.