Q144 / 160 · TS EAMCET 2025 (04 May Shift 2) · Physics

The electrostatic force between two charges kept in air is F. If $30 \%$ of the space between the charges is filled with a medium, then the electrostatic force between the charges becomes $\frac{\mathrm{F}}{2.56}$. The dielectric constant of the medium is

A
8
B
3
Correct answer
C
9
D
4

Hence, the correct answer is option: 'C'.

Relevant Questions

Four electric charges and are placed on -axis at distances , and 4 cm respectively. If the net force acting on the charge at origin is zero,03 May, 2025 (M)Electric Charge and Coulomb's law
For any fixed distance, the electromagnetic force between two protons is times of the gravitational force between them. Then02 May, 2025 (M)Electric Charge and Coulomb's law
Two positive point charges are separated by a distance of 4 m in air. If the sum of the two charges is and the electrostatic force between t09 May, 2024 (M)Electric Charge and Coulomb's law
Two point charges of magnitudes and are separated by a distance of 15 cm in air. The position of the point from charge at which the resultan09 May, 2024 (E)Electric Charge and Coulomb's law
Two charges are and are separated by . The magnitude of force acting on another charge placed at the midpoint of the line joining the two ch20 Jul, 2022 (M)Electric Charge and Coulomb's law
Four identical masses of m are kept at corners of a square. If the gravitational force exerted on one of masses by the other masses is 2 2 +04 Aug, 2021 (E)Electric Charge and Coulomb's law