Part 1) (Reffer to Discusion Question below) In the first problem of Discussion

Question

Part 1) (Reffer to Discusion Question below)

In the first problem of Discussion 20, if one used 400 nm light instead of the original light on the same metallic surface, the speed of the ejected electrons

Increases

Decreases

Remains the Same

Part 2) (Reffer to disccusion question below)

In the first problem of Discussion 20, if one used 400 nm light instead of the original light on the same metallic surface, the cutoff frequency

Part 1) (Reffer to Discusion Question below)

In the first problem of Discussion 20, if one used 400 nm light instead of the original light on the same metallic surface, the speed of the ejected electrons

Increases

Decreases

Remains the Same

Part 2) (Reffer to disccusion question below)

In the first problem of Discussion 20, if one used 400 nm light instead of the original light on the same metallic surface, the cutoff frequency

Question 3 options: increases decreases remains the same


First problem of discusion 20
Electrons are ejected from a metallic surface with speeds ranging up to 4.6 x 10 m/s when
light with a wavelength of ? = 625 nm is used. (a) What is the work function of the surface? (b)
What is the cutoff frequency for this surface?

Explanation / Answer

1)speed of the photons increases.

2)remains the same.

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