defence exam Agniveer Vayu Group X & XY Mock Test 01/2026 Physics Dual Nature: Photon and Matter Waves The Photoelectric Effect
A metal has work function w0 = 3.3 × 10-19 J. What should be the minimum frequency of the incident radiation that can remove an electron from the metal surface? [Given h = 6.6×10 - 34 J - s]
1
5 × 1010 Hz
2
5 × 1012 Hz
3
5 × 1014 Hz
4
5 × 1015 Hz