Question

‘The simultaneous location of both the position and the velocity of an electron in motion cannot be found with the desired accuracy’. This was proposed by

• A. Bohr
• B. Heisenberg
• C. Sommerfeld
• D. de Broglie

Answer 1

The correct option is B

Heisenberg

The explanation for the incorrect option: (B)

1. Heisenberg's uncertainty principle may be stated as it is not possible to determine simultaneously both the position and velocity of a microscopic moving particle such as an electron with absolute accuracy.
2. The principle is mathematically expressed as $∆\text{x . ∆p ≥}\frac{\text{h}}{4\text{π}}$.

The explanation for the incorrect options:

(A) The simultaneous location of both the position and the velocity of an electron in motion cannot be found with the desired accuracy was proposed by Heisenberg, not Bohr.

(C) It is not Sommerfeld who proposed the simultaneous location of both the position and the velocity of an electron in motion cannot be found with the desired accuracy.

(D) It is de Broglie who explained the dual nature of matter.

Hence, option (B) is correct - 'The simultaneous location of both the position and the velocity of an electron in motion cannot be found with the desired accuracy was proposed by Heisenberg.