a. Explanation Given data: Work function is 4.3eV. Formula used: Consider the work function equation. E = h c λ (1) Here, h is the planks constant, which has a standard value as 6.63 × 10 − 34 J ⋅ s , c is the speed of light, which has a standard value as 3 × 10 8 m s , λ is the wavelength. Explanation: Substitute 6.63 × 10 − 34 J ⋅ s for h , 3 × 10 8 m s for c , and 4.3 eV for E in equation (1), 4.3 eV = ( 6.63 × 10 − 34 J ⋅ s ) ( 3 × 10 8 m s ) λ λ = ( 6.63 × 10 − 34 J ⋅ s ) ( 3 × 10 8 m s ) 4 b. To determine The maximum possible speed of the electron.

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Question

Chapter 28, Problem 13P

To determine

The wavelength of light used to emit an electron from zinc surface.

To determine

The maximum possible speed of the electron.

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Chapter 28, Problem 12P

Chapter 28, Problem 14P

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