Question

In the beginning of the 20th century, the matter wave concept was introduced by:

• A. Broglie
• B. Avogadro
• C. Heisenberg
• D. Einstein

Hint:

De Broglie’s hypothesis led to the development of wave-particle duality, which was fundamental in the study of quantum mechanics.

Answer 1

The Correct Option is A

• Option 1: Broglie - This is the correct answer. In the early 20th century, Louis de Broglie introduced the concept of matter waves, proposing that particles such as electrons also exhibit wave-like properties. This was a significant development in quantum mechanics.
• Option 2: Avogadro - This is incorrect. Amedeo Avogadro is known for Avogadro's law, which relates the number of particles in a gas to its volume, but he did not contribute to the concept of matter waves.
• Option 3: Heisenberg - This is incorrect. Werner Heisenberg is famous for his uncertainty principle, which is a fundamental concept in quantum mechanics, but he did not introduce the matter wave concept.
• Option 4: Einstein - This is incorrect. Albert Einstein made significant contributions to the theory of relativity and the photoelectric effect, but he did not introduce the matter wave concept.

Explanation: 

The concept of matter waves was introduced by Louis de Broglie in 1924. He proposed that all matter, especially particles like electrons, have wave-like properties. This idea was crucial in the development of quantum mechanics and led to the wave-particle duality theory.