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Q.

Assertion (A) : Angular momentum of an electron in an atom is quantized 
Reason (R)  : In an atom only those orbits are permitted in which angular momentum of the electron is a natural number multiple of h2π
 

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a

Both Assertion & reason are true and the reason is the correct explanation of the assertion

b

The both Assertion & reason are true but the reason is not correct explanation of the assertion

c

Assertion is true statement but reason is false

d

Both Assertion & reason are false statements

answer is A.

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Detailed Solution

Electron revolves in only those orbits in which angular momentum is integral multiple of h2π

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