The threshold frequency of a certain metal is 3.3 × 10 14 Hz. If light of frequency 8.2 ×…
Physics · Class 12 · CBSE — Dual Nature of Radiation & Matter
The threshold frequency of a certain metal is 3.3 × 1014 Hz. If light of frequency 8.2 × 1014 Hz is incident on the metal, then the cut off voltage for photoelectric emission is (Given h = 6.63 × 10–34 J s)
- 2 V
- 4 V
- 6 V
- 8 V
Answer
(A) 2 V
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