Teaching Haryana (HPSC) Assistant Professor Mock Test 2025 Physics Dual Nature: Photon and Matter Waves The Photoelectric Effect
Light of wavelength 2 × 10-7 m is incident on a gold foil whose work function is 5.1 eV. Calculate the threshold frequency for photoelectric emission.
1
2.4 × 1015 Hz
2
1.2 × 1015 Hz
3
0.8 × 1015 Hz
4
1.6 × 1015 Hz
5
Question Not Attempted