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.

Related Questions:

1. Infinite number of masses, each 1 kg, are placed along the x-axis
2. If the momentum of electron is changed by P, then the de-Broglie wavelength
3. Power dissipated in an LCR series circuit connected to an a.c source of emf ? is
4. In the series resonance the value of impedence is 3 Ω and the resistance is 4Ω,
5. Two radiations of photons energies 1 eV and 2.5 eV, successively

Topics: Dual Nature of Matter and Radiation (150)
Subject: Physics (2479)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends