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Electrons used in an electron microscope...

Electrons used in an electron microscope are accelerated by a voltage of 25 kV. If the voltage is increased to 100 kV then the de Broglie wavelength associated with the electrons would

A

Increase by 4 times

B

Increase by 2 times

C

Decrease by 2 times

D

Decrease by 4 times

Text Solution

Verified by Experts

The correct Answer is:
C
`lamdaprop 1/sqrtVimplies lamda_1/lamda_2=sqrt(V_2/V1)`
`implies lamda_1/lamda_2=2" " implies lamda_2 =lamda_1/2 `
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