V0=eE−V=eh(v−v0)=1.6×10−196.62×10−34(8.2×1014−3.3×1014)=1.66.62×10−34×4.9×1033=1.66.62×4.9×10−1 V0=2 volt
The threshold frequency for a photo-sensitive metal is 3.3 × 10^14 ~Hz. If light of frequency 8.2 × 10^14 ~Hz is incident on this metal, the cut-off…
NEET UG 2011 — Physics Modern Physics
2011mcqmedium
The threshold frequency for a photo-sensitive metal is 3.3×1014 Hz. If light of frequency 8.2×1014 Hz is incident on this metal, the cut-off voltage for the photo-electric emission is nearly
Official previous-year question
Held on 30 Apr 2011 · Verified 9 Jul 2026.
Options
- A
2 V
- B
3 V
- C
5 V
- D
1 V
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