Home
Class 11
PHYSICS
Assertion : Thrust on a rocket depends o...

Assertion : Thrust on a rocket depends only on velocity of exhaust gases Rate of decrease of mass is irrelevant
Reason : Larger the velocity greater is the thrust .

Promotional Banner

Topper's Solved these Questions

  • Laws of Motion

    SL ARORA|Exercise Exercise|627 Videos

  • Kinetic Theory of gases

    SL ARORA|Exercise Example|47 Videos

  • LAWS OF MOTION : FRICTION

    SL ARORA|Exercise Self Practice|95 Videos

Similar Questions

Explore conceptually related problems

For a Rocket propulsion velocity of exhaust gases relative to rocket is 2km/s. If mass of rocket system is 1000 kg, then the rate of fuel consumption for a rockt to rise up with acceleration 4.9 m//s^(2) will be:-

Assertion : The acceleration produced by a force in the motion of a body depends only upon its mass. Reason : Larger is the mass of the body, lesser will be the acceleration produced.

Assertion : For a particle, acceleration-time graph gives the velocity. Reason : Rate of change of velocity is acceleration.

Assertion : If value of acceleration due to gravity of a planet is lesser than earth then escape velocity from planet is lesser too. Reason : Escape velocity just depends only on accelerartion due to gravity.

Assertion In case of projectile motion, the magnitude of rate of change of velocity is variable. Reason In projectile motion, magnitude of velocity first decreases and then increases during the motion.

Assertion: Retardation is directly opposite to the velocity. Reason: Retardation is equal to the time rate of decrease of speed.

Assertion : The velocity of electromagnetic waves depends on electric and magnetic properties of the medium Reason : Velocity of electromagnetic waves in free space is constant.

Assertion(A): The energy of ultraviolet radiation is greater than the energy of infrared radiation Reason (R): The velocity of ultraviolet radition is greater than the velocity of infrared radiation.

SL ARORA-Laws of Motion-Exercise
  1. Assertion: The centripetal forces and centrifugal forces never cancel ...

    Text Solution

    |

  2. Assertion: A quick collision between two bodies is more violent that s...

    Text Solution

    |

  3. Assertion : Thrust on a rocket depends only on velocity of exhaust gas...

    Text Solution

    |

  4. Statement I : On banked curved road, vertical component of normal reac...

    Text Solution

    |

  5. Assertion: Pseudo force is an imaginary force which is recongnised on...

    Text Solution

    |

  6. Assertion: Two bodies of masses M and m(M gt m) are allowed to fall fr...

    Text Solution

    |

  7. Assertion: A rocket works on the principle of conservation of linear m...

    Text Solution

    |

  8. Statement I : On banked curved road, vertical component of normal reac...

    Text Solution

    |

  9. A 10 N force is applied on a body produces in it an acceleration of 1 ...

    Text Solution

    |

  10. A cricketer catches a ball of mass 150 gm. in 0.1 second moving with s...

    Text Solution

    |

  11. A force of 6N acts on a body at rest and of mass 1kg. During this time...

    Text Solution

    |

  12. Physical independence of force is a Consequcnce of

    Text Solution

    |

  13. A force vector applied on a mass is represented as vec(F)=6hat(i)-8hat...

    Text Solution

    |

  14. A ball is dropped from a spacecraft revolving around the earth at a he...

    Text Solution

    |

  15. An object of mass 3 kg is at rest. Now a force of vec F = 6 t^2 hat...

    Text Solution

    |

  16. Sand is being dropped on a conveyor belt at the rate of Mkg//s . The f...

    Text Solution

    |

  17. Three froces acting on a body are shown in the figure. To have the res...

    Text Solution

    |

  18. A particle of mass m is projected with velocity making an angle of 45^...

    Text Solution

    |

  19. A particle of mass m is moving with a uniform velocity v(1). It is giv...

    Text Solution

    |

  20. A bullet is fired from a gun. The force on the bullet is given by F=60...

    Text Solution

    |