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JEE PYQ: Atomic Structure Question 28

Question 28 - 2020 (09 Jan Shift 1)

The de Broglie wavelength of an electron in the 4th Bohr orbit is:

(1). ($2\pi a_0$)

(2). ($4\pi a_0$)

(3). ($6\pi a_0$)

(4). ($8\pi a_0$)

Show Answer

Answer: (4)

Solution

$2\pi r = n\lambda$. $r = \frac{n^2 a_0}{Z} = 16a_0$. $\lambda = \frac{2\pi \times 16a_0}{4} = 8\pi a_0$.


Learning Progress: Step 28 of 45 in this series