Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 Chemistry Structure of Atom Atomic Structure

The work function for metals A, B and C respectively are 1.92 eV, 2.00 eV and 5.0 eV. Which of them will emit photo electrons if exposed to radiations of wavelength 4100 Å.

1

A only

2

A and B only

3

All of these

4

None of these

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