Home
Class 12
PHYSICS
Assertion: Electrons in the atom are hel...

Assertion: Electrons in the atom are held due to coulomb forces.
Reason: The atom is stable only because the centripetal force due to Coulomb's law is balanced by the centrifugal force.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

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

C

If assertion is true but reason is false.

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
C

According to postulates of Bohr's atom model, the electron revolve round the nucleus in fixed orbit of definite radii. As long as the electron is in a cenrtain orbits it does not radiate any energy.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ATOMIC PHYSICS

    A2Z|Exercise AIPMT/NEET Questions|31 Videos
  • ATOMIC PHYSICS

    A2Z|Exercise AIIMS Questions|10 Videos
  • ATOMIC PHYSICS

    A2Z|Exercise Problems Based On Mixed Concepts|43 Videos
  • ALTERNATING CURRENT

    A2Z|Exercise Section D - Chapter End Test|30 Videos
  • CURRENT ELECTRICITY

    A2Z|Exercise Section D - Chapter End Test|29 Videos

Similar Questions

Explore conceptually related problems

Why electrons present around the nucleus. The force of attractive is balanced by the centrifugal force.

Force Dependency on Medium||Examples on Coulomb's Law

Knowledge Check

  • Electron in the atom are held due to

    A
    Coulomb's forces
    B
    nuclear forces
    C
    gravitational forces
    D
    Vander forces
  • Assertion : Centripetal and centrifugal forces always cancle eachother Reason : The is because the two forces act on different bodies .

    A
    If both, Assertion and Reason are true and the Reason is the correct explanation of the Assertion
    B
    If both, Assertion and Reason are true but Reason is not a correct explanation of the Assertion
    C
    If Assertion is ture but the Reason is false
    D
    If both, Assertion and Reason are false
  • Assertion : Electrons do not experience strong nuclear force. Reason : Strong nuclear force is charge-independent force.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.
  • Similar Questions

    Explore conceptually related problems

    Assetrion: The coulomb force is the dominating force in the universe. Reason: The coulomb force is weaker than the gravitational force.

    Assertion: The centripetal forces and centrifugal forces never cancel out. Reason: They do not act at the same time.

    Assertion : Centripetal and centrifugal forces can- cel each other. Reason : This is because they are always equal and opposite.

    Assertion : Sometimes insects can walk on water. Reason : The gravitational force on insect is balanced by force due surface tension.

    Assertion : Work done by the frictional force is negaive Reason : This is because frictional force acts along the dirction of motion