Question

In a historical experiment to determine Planck’s constant, a metal surface was irradiated with light of
different wavelengths. The emitted photoelectron energies were measured by applying a stopping
potential. The relevant data for the wavelength (????) of incident light and the corresponding stopping
potential (V₀) are given below:
????(????m) V₀ (Volt)
0.3 2.0
0.4 1.0
0.5 0.4
Given that c = 3 x 10⁸ ms⁻¹ and e = 1.6 x 10⁻¹⁹ C, Planck’s constant (in units of J s) found from such an
experiment is
(A) 6.0 x 10⁻³⁴ (B) 6.4 x 10⁻³⁴
(C) 6.6 x 10⁻³⁴ (D) 6.8 x 10⁻³⁴

Answer 1

Answer:

sorry I don't know that answer