Navigate

Sodium and copper have work function 2.3 eV and 4.5 eV respectively

Sodium and copper have work function 2.3 eV and 4.5 eV respectively. The ratio of their threshold wavelengths is nearest to

Options

(a) 1 : 2
(b) 4 : 1
(c) 2 : 1
(d) 1 : 4

Correct Answer:

2 : 1

Explanation:

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

AIEEE2002
admin:

Related Questions

  1. When a current of (2.5±0.5) A flows through a wire, it develops a potential difference
  2. A long straight wire of radius a carries a steady current I. The current is uniformly
  3. In an NPN transistor the collector current is 24 mA. If 80% of the electrons
  4. A charged particle with a velocity 2×10³ ms⁻¹ passes undeflected through electric field
  5. Weight of a body of mass m decreases by 1% when it is raised to height h