Answer is (3)
Initial de-broglie wavelength will be,
…(i)
Acceleration of electron will be,
Velocity after time t,
So,
…(ii)
Divide (ii) by (i) we get,
Answer is (3)
Initial de-broglie wavelength will be,
…(i)
Acceleration of electron will be,
Velocity after time t,
So,
…(ii)
Divide (ii) by (i) we get,