engineering recuitment DRDO CEPTAM STA B Tier I (Sr. Technical Assistant) Mock Test 2022 Physics Dual Nature: Photon and Matter Waves The Photoelectric Effect
For a photosensitive surface, the work function is 3.3 × 10-19 J. Find threshold frequency. (Take h = 6.6 × 10-34 Js)
1
5 × 1014 Hz
2
0.5 × 1014 Hz
3
25 × 1014 Hz
4
2.5 × 1014 Hz