Assertion : Bohr had to postulate that the el | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) According to classical electromagnetic theory,an accelerated charged particle must emit electromagnetic radiation. Since an electron revolving in

Vedclass · Accepted Answer

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

Vedclass · Answer

(A) According to classical electromagnetic theory,an accelerated charged particle must emit electromagnetic radiation. Since an electron revolving in an orbit is undergoing centripetal acceleration,it should continuously lose energy and spiral into the nucleus,making the atom unstable. To resolve this,Bohr postulated that electrons revolve in specific 'stationary' orbits where they do not radiate energy. Thus,the Assertion is correct because Bohr had to make this assumption to explain atomic stability,and the Reason is correct because it describes the classical conflict that necessitated Bohr's postulate. Therefore,the Reason correctly explains the Assertion.

Assertion : Bohr had to postulate that the electrons in stationary orbits around the nucleus do not radiate.
Reason : According to classical physics,all moving electrons radiate.

Similar Questions

If $x=a\left\{\cos \theta+\log \tan \left(\frac{\theta}{2}\right)\right\}$ and $y=a \sin \theta$,then $\frac{d y}{d x}$ is equal to

Which of the following hydrides has the lowest boiling point?

Two particles $A$ and $B$ move with constant velocities $\vec{v}_1$ and $\vec{v}_2$. At the initial moment,their position vectors are $\vec{r}_1$ and $\vec{r}_2$ respectively. The condition for their collision is

If $A$ and $B$ are mutually exclusive events with $P(B) \neq 1$,then $P(A \mid \bar{B})$ is equal to (Here $\bar{B}$ is the complement of the event $B$)

$A$ thin hollow sphere of mass $m$ is completely filled with a liquid of mass $m$. When the sphere rolls with a velocity $v$,the kinetic energy of the system is (neglect friction).

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Assertion : Bohr had to postulate that the electrons in stationary orbits around the nucleus do not radiate. Reason : According to classical physics,all moving electrons radiate.