Home
Class 11
PHYSICS
Assertion: In an elasticcollision of two...

Assertion: In an elasticcollision of two billard balls, the total `KE` is conservation during the short times of collision of the balls`(i.e., when they are in constant).
Reason: Energy spend against friction does not follow the law of conservation of energy.

A

If both assertion and reason are true and reason is a true 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 is and reason are false.

Text Solution

Verified by Experts

Since the balls are in constant in the deformed state, their total energy is in the form of potential energy and kinetic energy, so kinetic energy is less than the total energy. The energy spend against friction is dissipated in the form of heat which is not available for doing work.
Promotional Banner

Topper's Solved these Questions

  • WORK, ENERGY, POWER AND COLLISION

    A2Z|Exercise Chapter Test|29 Videos

  • WORK, ENERGY, POWER AND COLLISION

    A2Z|Exercise NEET Questions|49 Videos

  • WAVES AND ACOUSTICS

    A2Z|Exercise Chapter Test|30 Videos

Similar Questions

Explore conceptually related problems

Assertion : In an elastic collision of two billiard balls, the total knetic energy is conserved during the short time of oscillation of the balls ( i.e. when they are in contact ) . Reason : Energy spent against friction does not follow the law of conservation of energy .

In an elastic collision of two billiard balls, is the total kinetic energy conserved during the short time of collision of the ball (i.e when they are in contact)?

In an elastic collision of two billiard balls which of the following quantities is not conserved during the short time of collision :

Anwer carefully, with reasons: a) In an elastic collision of two billiard balls, is the total kinetic energy conserved during the short time of collision of the balls (i.e. when they are in contact)? Is the total linear momentum conserved during the short time of an elastic collision of two balls? c) What are the answers to a) and b) for an inelastic collision? d) If the potenital energy of two billiard balls depends only on the separation distance between their centers, is the collision elastic or inelastic? (note we are talking here of potential energy corresponding to the force during collision, not gravitational potential energy).

In an elastic collision of two billiard balls, which of the following quantities remain conserved during the short time of collision of the balls (i.e., when they are in contact). (a) Kinetic energy . (b) Total linear momentum ? Give reason for your answer in each case.

During elastic collision of two balls, is kinetic energy conserved during the short interval of contact of balls ?

Assertion: Collisionn between two billiard's ball are inelastic Reason: Momentum remains conserve during the collision.

Assertion: In an elastic collision of two bodies , the momentum and energy of each body is conserved. Reason: If two bodies stick to each other , after colliding , the collision is said to be perfectly elastic.

Assertion : Motional induced emf e = Bvl can be derived from the relation e = -(dtheta)/(dt) Reason : Lenz's law is a consequence of law of conservation of energy.

A2Z-WORK, ENERGY, POWER AND COLLISION-AIIMS Questions
  1. A force of (3 hati + 4 hatj) Newton acts on a body and it by (3 hati +...

    Text Solution

    |

  2. The kinetic energy of a body becomes four times its initial value.The ...

    Text Solution

    |

  3. A bomb of mass 3.0 kg explodes in air into two pieces of masses 2.0 kg...

    Text Solution

    |

  4. A bolck of mass 10 kg is moving in x-direction with a constant speed o...

    Text Solution

    |

  5. A vertical spring with force constant k is fixed on a table. A ball of...

    Text Solution

    |

  6. The potential energy of a body is given by U = A - Bx^(2) (where x is ...

    Text Solution

    |

  7. A body of mass m is acceleratad uniformaly from rest to a speed v in a...

    Text Solution

    |

  8. A ball is projected with an velocityV(0) at an angle of elevation 30^(...

    Text Solution

    |

  9. A steel ball of radius 2 cm is at rest on a frictionless surface. Anot...

    Text Solution

    |

  10. A ball collides impinges directly on a similar ball at rest. The first...

    Text Solution

    |

  11. A neutron with velocity V strikes a stationary deuterium atom, its kin...

    Text Solution

    |

  12. Assertion: In an elasticcollision of two billard balls, the total KE i...

    Text Solution

    |

  13. Assertion: Frictional force are conservative forces. Reason: Potenti...

    Text Solution

    |

  14. Assertion: According to law of conservation of machainical energy chan...

    Text Solution

    |

  15. Assertion: The instantcous power of an agent is measured as the dot pr...

    Text Solution

    |

  16. Assertion: Work done by the force of friction in moving a body around ...

    Text Solution

    |

  17. Assertion: In an elastic collision of two bodies , the momentum and en...

    Text Solution

    |

  18. Assertion: Work done by the force of friction in moving a body around ...

    Text Solution

    |

  19. Assertion: Power of machine gun is determined by body both the number ...

    Text Solution

    |

  20. Assertion: Mass and energy are not conserved separately, but are conse...

    Text Solution

    |