Navigate

When a metallic surface is illuminated with radiation of wavelength λ,

When a metallic surface is illuminated with radiation of wavelength λ, the stopping potential is V. If the same surface is illuminating with radiation of wavelength 2λ, the stopping potential is V/4. The threshold wavelength for the metallic surface is

Options

(a) 5λ
(b) 5/2 λ
(c) 3λ
(d) 4λ

Correct Answer:

3λ

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

NEET2016
admin:

Related Questions

  1. A spring has time period T. It is cut into n equal parts. The time period of each part
  2. A wire elongates by l mm when a load W is hanged from it. If the wire goes over
  3. A body is thrown vertically upward in air when air resistance is taken into account
  4. A uniform force of (3i+j) Nacts on a particle of mass 2 kg.Hence the particle is displaced
  5. In a vaccum triode the function of grid voltage is