Home
Class 11
PHYSICS
A person standing oin the floor of an el...

A person standing oin the floor of an elevator drops as coin. The coin reaches the floor of the elevator in a time `t_1` if the elevator is stationary and in the `t_2` if it is moving uniformly. Then

A

`t_(1) = t_(2)`

B

`t_(1) lt t_(2)`

C

`t_(1) gt t_(2)`

D

`t_(1) lt t_(2)` or `t_(1) gt t_(2)` depending on whether the lift if going up or down.

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • NEWTONS LAWS OF MOTION

    PHYSICS GALAXY - ASHISH ARORA|Exercise Numerical MCQs|90 Videos
  • NEWTONS LAWS OF MOTION

    PHYSICS GALAXY - ASHISH ARORA|Exercise Advance MCQs|17 Videos
  • NEWTONS LAWS OF MOTION

    PHYSICS GALAXY - ASHISH ARORA|Exercise Discussion Question|39 Videos
  • LINEAR MOMENTUM & ITS CONSERVATION

    PHYSICS GALAXY - ASHISH ARORA|Exercise exercise 1.3|3 Videos
  • RIGID BODIES AND ROTATIONAL MOTION

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical|63 Videos

Similar Questions

Explore conceptually related problems

A person is standing at the floor of lift drops a coin The coin reaches the floor of lift in time t_1 if elevator is stationary and in time t_2 if it is moving uniformly then

A person is standing at the floor of lift drops a coin The coin reaches the floor of lift in time t_1 . if elevator is stationary and in time t_2 , if it is moving uniformly then

A person stands on a weighing machine kept on the floor of an elevator .When the elevator is at rest then the apparent weight of the person is

The force exerted by the floor of an elevator on the foot of a person standing there is more than the weight of the person if the elevator is :

An elevator is descending with uniform acceleration.To measure the acceleration, a person in the elevator drops a coin at momen the elevator strts. The coin is 6 ft asbove the floor of the elevator at the time it is dropped. The person observes that the coin strikes the floor in 1 second. Calculate these dta the acceleration of the elevator.

A boy in the elevator shoots a bullet in a vertical upward direction from a height of 1.5 m above the floor of the elevator. There is no roof in the elevator. The floor of the elevator is at 50 m from ground at the instant when velocity of the elevator is 10 m/s in upward direction. The bullet strikes the floor of the elevator in 2 seconds. The initial speed of the bullet is 15 m/s relative to the elevator. Q. Find the maximum height reached by the bullet relative to the ground :

A boy in the elevator shoots a bullet in a vertical upward direction from a height of 1.5 m above the floor of the elevator. There is no roof in the elevator. The floor of the elevator is at 50 m from ground at the instant when velocity of the elevator is 10 m/s in upward direction. The bullet strikes the floor of the elevator in 2 seconds. The initial speed of the bullet is 15 m/s relative to the elevator. Q. Find the acceleration of the elevator in upward direction, ((ms)/(s^2)) :

A boy in the elevator shoots a bullet in a vertical upward direction from a height of 1.5 m above the floor of the elevator. There is no roof in the elevator. The floor of the elevator is at 50 m from ground at the instant when velocity of the elevator is 10 m/s in upward direction. The bullet strikes the floor of the elevator in 2 seconds. The initial speed of the bullet is 15 m/s relative to the elevator. Q. Find the displacement of the bullet relative to ground during its flight:

A boy in the elevator shoots a bullet in a vertical upward direction from a height of 1.5 m above the floor of the elevator. There is no roof in the elevator. The floor of the elevator is at 50 m from ground at the instant when velocity of the elevator is 10 m/s in upward direction. The bullet strikes the floor of the elevator in 2 seconds. The initial speed of the bullet is 15 m/s relative to the elevator. Q. Find the distance travelled by bullet during its flight:

A man is standing on a weighing machine kept on the floor of an elevator. The ratio of measured weight of the man when elevator is at rest and when it is moving with downward acceleration a is 3 : 2. The value of a is :

PHYSICS GALAXY - ASHISH ARORA-NEWTONS LAWS OF MOTION-Conceptual MCQs
  1. A ball is dropped vertically from a height d above the ground . It hit...

    Text Solution

    |

  2. A bicycle moves on a horizontal road with some acceleration. The force...

    Text Solution

    |

  3. Consider the situation shown in figure. The wall is smooth but the sur...

    Text Solution

    |

  4. A block is about to slide down an inclined plane when its inclination ...

    Text Solution

    |

  5. Two objects A and B are thrown upward simultaneously with the same spe...

    Text Solution

    |

  6. Block A is placed on block B, whose mass is greater than that of A. Th...

    Text Solution

    |

  7. A body of mass M is applying horizontal force to slide a box of mass M...

    Text Solution

    |

  8. A block rests on a rough plane whose inclination theta to the horizont...

    Text Solution

    |

  9. In the balance machine, shown in the figure-2.127 which arm will move ...

    Text Solution

    |

  10. In a situation the contact force by a rough horizontal surface on a bo...

    Text Solution

    |

  11. In the figure the block A,B and C of mass m each, have acceleration a(...

    Text Solution

    |

  12. A block kept on an inclined surface, just begins to slide if the incli...

    Text Solution

    |

  13. When the force of constant magnitude always act perpendicular to the m...

    Text Solution

    |

  14. Essential characteristic of equilibrium is:

    Text Solution

    |

  15. The force required to stretch a spring varies with the distance a show...

    Text Solution

    |

  16. A person standing oin the floor of an elevator drops as coin. The coin...

    Text Solution

    |

  17. A scooter starting from rest moves wilth as constant acceleration for ...

    Text Solution

    |

  18. A block of mass m is supported by a string passing through a smooth pe...

    Text Solution

    |

  19. A metal block of mass m is placed on a smooth metallic plane in suppor...

    Text Solution

    |

  20. In an imaginary atmosphere, the air exerts a small force F on any part...

    Text Solution

    |