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A: Bohr had to postulate that the electr...

A: Bohr had to postulate that the electrons in stationary orbit around the nucleus do not radiate.
R: According to classical physics all moving electrons radiate.

A

Both assertion and reason are true and the reason is correct explanation of the assertion.

B

Both assertion and reason are true but reason is not correct explanation of the assertion.

C

Assertion is true but the reason is false.

D

Both assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
B
Both assertion and reason are true but reason is not correct explanation of the assertion.
According to classical physics, all moving charged particle radiate electromagnetic radiation. So moving electrons will also radiate energy. If we see the atomic structure we find that electrons revolve around the nucleus in some particular orbits. This is one of Bohr.s postitulates. The postulate is on the fact that if the moving electrons radiate thereby losing energy they have got a chance to finally fall back into the nucleus and the atom will be collapsed.
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