Home
Class 12
PHYSICS
The ratio of the force between two small...

The ratio of the force between two small spheres (with constant charges) `F_(1)` in air and `F_(2)` in a medium of dielectric constant k is respectively..

A

`1:k`

B

`k:1`

C

`1:k^(2)`

D

`K^(2):1`

Text Solution

Verified by Experts

The correct Answer is:
B
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ELECTRIC CHARGES AND FIELDS

    NARAYNA|Exercise EVALUATE YOURSELF-2|9 Videos
  • ELECTRIC CHARGES AND FIELDS

    NARAYNA|Exercise EVALUATE YOURSELF-3|7 Videos
  • ELECTRIC CHARGES AND FIELDS

    NARAYNA|Exercise EXERCISE -4|43 Videos
  • DUAL NATURE

    NARAYNA|Exercise LEVEL-II (H.W)|17 Videos
  • ELECTRO MAGNETIC INDUCTION

    NARAYNA|Exercise Level-II (H.W)|23 Videos

Similar Questions

Explore conceptually related problems

The ratio of the forces between two charges placed at a certain distance apart in air and at half of the distance a part in medium of dielectric 'k' is А) k B) k/3 C) k/2 D) K/4

Two point charges are kept in air with certain separation between them.The force between them is F_(1) if half of the space between the charges is filled with a medium of dielectric constant 4 and the force between them is F_(2) if (1)/(3)rd of the space between the charges is filled with dielectric of dielectric constant 9.Then (F_(1))/(F_(2)) is

Knowledge Check

  • The ratio of the force between two small conducting spheres of equal charge in (a) a medium of dielectric constant 2, and (b) air is respectively

    A
    `1:4`
    B
    `4:1`
    C
    `1:2`
    D
    `2:1`
  • The force of attraction between two charges at distance r, when the air is replaced by a medium of dielectric constant k.

    A
    Increases `k^(2)` times
    B
    decreases K times
    C
    remains uncharged
    D
    increases K times
  • Two point charges placed at a certain distance r in air exert a force F on each other. Then the distance r at which these charges will exert the same force in a medium of dielectric constnat K is given by

    A
    r
    B
    `r/K`
    C
    `r/(sqrt(K))`
    D
    `rsqrt(K)`
  • Similar Questions

    Explore conceptually related problems

    Force between two point charges in air at certain distance is 200N . What will force when they are kept in a medium of dielectric constant 4 , at the same distance?

    The number of tubes of force originating from a point charge of 17.7xx10^(-8)C placed in dielectric medium of dielectric constant 4 are

    If two charges are kept in a material of dielectric constant what is the ratio of force between them:

    Two charge when kept at a distance of 1m apart vacuum have a some force of repulsion .if the force of repulsion between these two charges be same ,whenplaced in an oil of dielectric constant 4 the distance of separation is

    The energy density of a medium of dielectric constant k surrounding the charged conductor is