Question

An electron accelerated through a potential difference V₁ has a de-Broglie wavelength of λ. When the potential is changed to V₂, its de-Broglie wavelength increases by 50%. The value of \((\frac{V_1}{V_2})\) is equal to

(1) 3 

(2) 9/4 

(3) 3/2 

(4) 4

Answer 1

Correct option is (2) 9/4