The stopping potential value is 0.6 V when the light source is kept at a distance of 20 cm. When the same source is kept at 40 cm away, the stopping potential is.
A. 0.6 V
B. 0.3 V
C. 1.2 V
D. 2.4 V
Answer:A
The stopping potential value is 0.6 V when the light source is kept at a distance of 20 cm. When the same source is kept at 40 cm away, the stopping potential is.
A. 0.6 V B. 0.3 V C. 1.2 V D. 2.4 V