In a Computer Monitor,electrons Approach the Screen at 1

question 31

Multiple Choice

In a computer monitor,electrons approach the screen at 1.20 × 10⁸ m/s.What is the de Broglie wavelength of these electrons? Note: the mass of electrons is 9.109 × 10^-³¹ kg;and use the relativistic momentum in your calculation.

• A)4.31 × 10^-¹² m
• B)5.56 × 10^-¹² m
• C)6.07 × 10^-¹² m
• D)6.62 × 10^-¹² m
• E)7.85 × 10^-¹² m

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