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Question

A proton and an α -particle are accelerated through a potential difference of 100 V. The ratio of the wavelength associated with the proton to that associated with an α-particle is 



A

2:1

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B

2:1

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C

22:1

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D

122:1

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Solution

The correct option is D

22:1


λ=h2mQVλ1mQλpλα=mαQαmpQp=4mp×2Qpmp×Qp=22


Physics

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