Mathematics · Photoelectric Effect
The stopping potential for photoelectrons emitted from a surface illuminated by light of frequency 6.0 × 108 MHz is 0.72 V. When the incident frequency is changed, the stopping potential is found to be 1.44 V. The new frequency is approximately: (Given e/h = 2.4 × 1014 C J-1 s)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 17.0 × 1014 Hz
- 22.1 × 109 MHz
- 34.2 × 108 MHz
- 47.7 × 108 MHz✓
Correct answer
7.7 × 108 MHz
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