Question

An electron is continuously accelerated in vacuum tube by applying potential difference. If its de Broglie wavelenght is decreased by 1.0 % the change in the kinetic energy of ht eelectron is nearly :​

Answer 1

Answer:

Kinetic energy increase by 2%.

Explanation:

Kinetic energy 2 = 1.02 K.E1

% changes in K.E.

$((1.02 - 1) \times 100) \div 1$

=

= 0.02 ×100

= 2% increses