Electrons are emitted with zero velocity from a metal surface when it is exposed to radiation of wavelength 6800 - Calculate threshold frequency v0 and work function W0 of the metal-

Threshold wavelength of radian = 6800 × 10–10 m Threshold frequency of the metal = 4.41 × 1014 s–1 Thus, the threshold frequency of the metal is 4.41 × 10 ...

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Standard XII

Physics

Stopping Potential

Electrons are...

Question

Electrons are emitted with zero velocity from a metal surface when it is exposed to radiation of wavelength 6800 Å. Calculate threshold frequency () and work function (W₀) of the metal.

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Solution

Threshold wavelength of radian = 6800 × 10^–10 m

Threshold frequency of the metal

= 4.41 × 10¹⁴ s^–1

Thus, the threshold frequency of the metal is 4.41 × 10¹⁴ s^–1.

Hence, work function (W₀) of the metal = hν₀

= (6.626 × 10^–34 Js) (4.41 × 10¹⁴ s^–1)

= 2.922 × 10^–19 J

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Electrons are emitted with zero velocity from a metal surface when it is exposed to radiation of wavelength 6800 Å. Calculate threshold frequency () and work function (W0) of the metal.

Threshold wavelength of radian = 6800 × 10–10 m Threshold frequency of the metal = 4.41 × 1014 s–1 Thus, the threshold frequency of the metal is 4.41 × 1014 s–1. Hence, work function (W0) of the metal = hν0 = (6.626 × 10–34 Js) (4.41 × 1014 s–1) = 2.922 × 10–19 J

Electrons are emitted with zero velocity from a metal surface when it is exposed to radiation of wavelength 6800 Å. Calculate threshold frequency () and work function (W₀) of the metal.