Skip to main content
EasyRe-NEET 2026
+4 / -1
A unit positive point charge is taken slowly through an infinitesimally thin tube that is inside a charged dielectric sphere of radius R, having uniform positive charge density ρ, as shown in the figure. The initial and final positions of the charge are marked by A and B at distances 2R and 3R respectively, from the centre of the sphere. In this process, the magnitude of the total work done on the point charge is ρR²/nε₀. The value of n is : (ε₀ is the permittivity of vacuum)
A
2
B
6
C
9
D
18
Previous

Which of the following measurements require 'index correction'?

Next

Consider three media P, Q and R with refractive indices 1, 1.25, and 1.5, respec

More from Physics
Easy

An ideal gas is made of polyatomic molecules. Each of the molecules has three translational, three r

Easy

Bob B of mass m at rest is hanging vertically from the ceiling via a massless string of length 10 m,

Easy

The following table presents the part of the electromagnetic spectrum and their corresponding major

Easy

Three identical p-n junction diodes D₁, D₂ and D₃ are connected across a battery as shown in the fig

Easy

A car travels on a circular racetrack of radius 50 m, which is banked at an angle θ. If the car trav

Easy

Consider that an electron is revolving in an excited state of Hydrogen atom with velocity √25.6 × 10

Practice Re-NEET 2026 Exams

Full-length mock tests with detailed analytics, rank, and percentile.

Browse Exams