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

When A Metallic Surface Is Illuminated With Radiation Of Wavelength Physics QuestionWhen A Metallic Surface Is Illuminated With Radiation Of Wavelength Physics Question

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:

Explanation:

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

AddThis Website Tools
admin:

Related Questions

  1. A slab consists of two parallel layers of two different materials of same thickness
  2. Magnetic induction produced at the centre of a circular loop carrying current is B.
  3. A thermocouple of negligible resistance produces an e.m.f. of 40 µV/⁰C in the linear range
  4. A galvanometer has a coil of resistance 100 ohm and gives a full-scale deflection
  5. A car moving with a speed of 50 kmh⁻¹ can be stopped by brakes after at least 6 m