MHT CET 2024 Physics question

When the electron orbiting in hydrogen atom in its ground state moves to the third excited state, the de-Broglie wavelength associated with it

(A)becomes zero
(B)remains unchanged
(C)will decrease
(D)will increasesCorrect

Answer: (D)

Solution

Ground state is ; the third excited state is . The speed of the electron is , so it falls to one-fourth. The de-Broglie wavelength is inversely proportional to the speed, so and it becomes four

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-092896