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Q. 16

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 1114

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Short Answer

At what speed is an electron's de Broglie wavelength (a) , (b) , (c) , and (d) ?

(a)

(b)

(c)

(d)

See the step by step solution

Step by Step Solution

Part(a) Step 1: Given Information 

The electron's de Broglie wave length is

Part(a) Step 2: Calculation

We can start the solution with expression for de-Broglie wavelength

This speed is larger than speed of light, so we must calculate relativistic speed:

Part(b) Step 1: Given Information 

The electron's de Broglie wave length is

Part(b) Step 2: Calculation 

For we have:

Part(c) Step 1: Given Information 

The electron's de Broglie wave length is

Part(c) Step 2: Calculation

For we have:

Part(d) Step 1: Given Information 

The electron's de Broglie wave length is

Part(d) Step 2: Calculation

For we have:

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