Answer:
30
Explanation:
im not a point taker i help when people need help
i think that is right
a is the correct choice
3x10⁴v
Using
Wavelength= h/ √(2m.Ke)
880nm = 6.6E-34/√ 2.9.1E-31 x me
Ke= 6.6E-34/880nm x 18.2E -31.
5.6E-27/18.2E-31
= 3 x 10⁴ Volts
