Home
Class 12
PHYSICS
Statement-1: Tension in a massless strin...

Statement-1: Tension in a massless string may be different at different points.
Statement-2: Net force on a massless object is zero.

A

Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1.

B

Statement-1 is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1.

C

Statement-1 is true, statement-2 is false.

D

Statement -1 is false, statement -2 is true.

Text Solution

Verified by Experts

The correct Answer is:
B

if there's friction on pulley the pulley rotates.
`(B) F=(0)a`
`F=0`
Promotional Banner

Topper's Solved these Questions

  • MASTER PRACTICE PROBLEM

    BANSAL|Exercise Multiple objective|131 Videos

  • MASTER PRACTICE PROBLEM

    BANSAL|Exercise Subjective|107 Videos

  • MASTER PRACTICE PROBLEM

    BANSAL|Exercise Comphrehension|134 Videos

  • FLUID MECHANICS

    BANSAL|Exercise PYQS AIEEE|10 Videos

  • SEMICONDUCTORS

    BANSAL|Exercise CBSE Question|32 Videos

Similar Questions

Explore conceptually related problems

Assertion :- Tension in massless string may be different at different points. Reason :- Net force on a massless object may be zero

A uniform rope of mass m hangs from a ceiling ad a block of mass m is attached to the free end of rope. Statement-1: The speed of a transverse wave in rope is different at different points. Statement-2: The tension in the rope is different at diferent points.

Statement I: In fig., ground is smooth and masses of both the block are differents. The net force acting on each of the block is not same. Statement II: Acceleration of both will be different.

Statement-1: Elasticity restoring forces may be conservative. Statement-2: The value of strain for same stress are different while increasing the load and while decreasing the load.

Statement-1: Young's modulus for a perfectly plastic body is zero Statement-2: For a perfectly plastic body, restoring force is zero.

Choose the correct combination of true (T) or fale (F) for the statements. STATEMENT-1: A particle may be accelerating in a reference frame even if net extermal force on the particle is zero. STATEMENT-2: Newton's laws are valid only in frames at rest. STATEMENT-3: Work done by a force depends on reference frame.

Statement-1: Non zero work has to be done on a moving particle to change its momentum. Statement-2 : To change momentum of a particle a non zero net force should act on it.

The tube shown is of non-uniform crossection the cross-section area at A is half of the cross-section area at B, C and D a liquid is flowing through in steady state. The liquid exerts on the tube Statement:I- A net force towards right. Statement:II-A net force towards left statement:III-A net force in some oblique direction Statement:IV-Zero net force Statement V: A net clockwise torque. Statement:VI-A net counter-clockwise torque. (A). Only statement I and V are correct (B). Only statement II and VI are correct (C). Only statement IV and VI are correct (D). Only statement III and VI are correct.

Statement-1 : If the net external force on the body is zero then its acceleration is zero. Statement-2 : Acceleration does not depend on force

Statement-1: If potential difference between two points is zero and resistance between those points is zero, current may flow between the points. Statement-2: Kirchhoff's 1^(st) law is based on conservation of charge.

BANSAL-MASTER PRACTICE PROBLEM-Reasoning
  1. Statement-1: A hot air balloon is being carried away due north, flags ...

    Text Solution

    |

  2. Two stones are thrown in same verticle plane from different floors of ...

    Text Solution

    |

  3. Statement-1: Tension in a massless string may be different at differen...

    Text Solution

    |

  4. Statement-1: A man is standing on a bathroom scale. Suddenly he squats...

    Text Solution

    |

  5. figure shows a smooth cart on a smooth surface (with small wheels) wit...

    Text Solution

    |

  6. Statement-1: A man can not walk by himself on frictionless floor. St...

    Text Solution

    |

  7. Statement -1: A horse can pull a cart on a horizontal surface only if ...

    Text Solution

    |

  8. Statement-1: Two particles of mass 1 kg and 3 kg move towards each ot...

    Text Solution

    |

  9. Statement-1: Two particles acted by same net force for same time alway...

    Text Solution

    |

  10. Statement-1: Two particles acted by same net force for same time alway...

    Text Solution

    |

  11. Statement-1 and 2 are on a situation of a frog jumping vertically up o...

    Text Solution

    |

  12. Statement-1: If the centre of mass of a system is at the origin then t...

    Text Solution

    |

  13. Statement-1: In centre of mass frame the linear momentum of system is ...

    Text Solution

    |

  14. Statement-1: If we want to throw a bottle from a moving train so that ...

    Text Solution

    |

  15. Two blocks are connected by a spring and given velocity v(1) and v(2) ...

    Text Solution

    |

  16. Statement-1: Total kinetic energy during an elastic collision between ...

    Text Solution

    |

  17. Statement-1: If the resultant of all the forces acting on a system is ...

    Text Solution

    |

  18. Consider the arrangement shown in figure. The block is initially at re...

    Text Solution

    |

  19. A thin walled hollow spherical shell of mass m and radius r starts fro...

    Text Solution

    |

  20. Figure shows a yo-yo placed on a rough surface friction is sufficient ...

    Text Solution

    |