Home
Class 12
PHYSICS
There is a conductor with cavity of rad...

There is a conductor with cavity of radius `R` as shown in figure. A point charge `Q` is placed at `R//2` distance from centre of cavity.
A point `P` is at `r` distance from centre of conductor. Then,

A

charge density at iner surface of cavity will be non uniform

B

charge density at surface of conductor will be uniform

C

electric field at point `P` is `Q/(4pi epsilon_(0)r^(2))`

D

force on charge `Q` is non zero

Text Solution

Verified by Experts

The correct Answer is:
A, B, C, D
Electric field lines kill of on surface on conductor.
Promotional Banner

Topper's Solved these Questions

  • TEST PAPERS

    FIITJEE|Exercise PHYSICS|747 Videos

  • SIMPLE HARMONIC MOTION

    FIITJEE|Exercise Assignment Problems (Objective) (Level-II)|20 Videos

  • WORK, ENERGY AND POWER

    FIITJEE|Exercise COMPREHENSIONS ( Comprehension-II)|5 Videos

Similar Questions

Explore conceptually related problems

A solid spherical conductor of radius R has a spherical cavity inside it (see figure). A point charge q is placed at the centre of the cavity. (a) What is the potential of the conductor? (b) If the charge q is shifted inside the cavity by a distance Deltax , how does the potential of the conductor change? (c) How does your answer to the question (a) and (b) change if the cavity is not spherical and the charge q is placed at any point inside it (see figure) (d) Draw electric field lines in entire space in each case. In which case all field lines are straight lines

There is a cubical cavity inside a conducting sphere of radius R. A positive point charge Q is placed at the centre of the cube and another positive charge q is placed at a distance 1(gtR) from the centre of the sphere. The sphere is earthed Net charge on the outer surface of conducting sphere is

A conducting sphere of radius R_(2) has a spherical cavity of radius R_(1) which is non concentric with the sphere. A point charge q_(1) is placed at a distance r from the centre of the cavity. For this arrangement, answer the following questions. If q_(1) is shifted to the centre of the cavity, then: (choose the correct alternative)

A conducting sphere of radius R_(2) has a spherical cavity of radius R_(1) which is non concentric with the sphere. A point charge q_(1) is placed at a distance r from the centre of the cavity. For this arrangement, answer the following questions. Electric potential at the centre of the cavity will be :

A sphere of radius 2R and mas M has a spherical cavity of radius R as shown in the figure. Find the value of gravitational field at a point P at a distance of 6R from centre of the sphere.

A conducting sphere of radius R_(2) has a spherical cavity of radius R_(1) which is non concentric with the sphere. A point charge q_(1) is placed at a distance r from the centre of the cavity. For this arrangement, answer the following questions. Electric field (magnitude only) at the center of the cavity will be :

A thin spherical conducting shell of radius R has a charge q. Another charge Q is placed at the centre of the shell. The electrostatic potential at a point P a distance R/2 from the centre of the shell is

A conducting shell of radius R carries charge -Q . A point charge +Q is placed at the centre. The electric field E varies with distance r (from the centre of the shell) as

FIITJEE-TEST PAPERS-PHYSICS
  1. In the circuit shown, the switch S has been close for a long time. At ...

    Text Solution

    |

  2. Two coherent sources S(1) and S(2) are situated as shown in figure. He...

    Text Solution

    |

  3. There is a conductor with cavity of radius R as shown in figure. A po...

    Text Solution

    |

  4. Current growth in two L-R circuits (b) and (c ) as shown in figure (a)...

    Text Solution

    |

  5. A uniform disc of mass m and diameter 2R moves forward towards another...

    Text Solution

    |

  6. Two strings with linear mass densities mu(1)=0.1kg//m and mu(2)=0.3kg/...

    Text Solution

    |

  7. Consider a piston- cylinder arrangement with spring in its natural len...

    Text Solution

    |

  8. We know how by neglecting the air resistance, the problems of projecti...

    Text Solution

    |

  9. We know how by neglecting the air resistance, the problems of projecti...

    Text Solution

    |

  10. We have a disc of neglligible thickness and whose surface mass density...

    Text Solution

    |

  11. We have a disc of neglligible thickness and whose surface mass density...

    Text Solution

    |

  12. There is a disc of mass M and radius R. A pont charge +Q and of mass m...

    Text Solution

    |

  13. Two identical containers contain same amount of ideal gas at identic...

    Text Solution

    |

  14. A hydrogen atom moving at a speed v(0) absorbs a photon of wavelength ...

    Text Solution

    |

  15. An inductor coil stores 16 joules of energy and dissipates energy as h...

    Text Solution

    |

  16. ABCDEF is a regular hexagon of side a. At each vertex A, B and C a poi...

    Text Solution

    |

  17. Initially switch S is opened and energy stored between the plates of c...

    Text Solution

    |

  18. A uniform disc of mass m and radius R is given a velocity v(0) and ang...

    Text Solution

    |

  19. Consider a hypothetical field in which force acting on a particle vari...

    Text Solution

    |

  20. A small sphere of mass m and radius r is placed inside a horizontal ho...

    Text Solution

    |