MCQ
When the light source is kept 20 cm away from a photo cell, stopping potential 0.6 V is obtained. When source is kept 40 cm away, the stopping potential will be
- A0.3 V
- ✓0.6 V
- C1.2 V
- D2.4 V
✓
Answer
Correct option: B.
0.6 V
0.6 V
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