MCQ
A flat circular disc has a charge +Q uniformly distributed on the disc. A charge +q is thrown with kinetic energy E towards the disc along its normal axis. The charge q will
  • A
    Hit the disc at the centre
  • B
    Return back along its path after touching the disc
  • C
    Return back along its path without touching the disc
  • Any of the above three situations is possible depending on the magnitude of E

Answer

Correct option: D.
Any of the above three situations is possible depending on the magnitude of E
Any of the above three situations is possible depending on the magnitude of E

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

If ${n_e}$ and ${n_h}$ are the number of electrons and holes in a semiconductor heavily doped with phosphorus, then
With increase in frequency of an $A.C$. supply, the inductive reactance.
In the given circuit, the $AC$ source has $\omega=100 \ rad / s$. considering the inductor and capacitor to be ideal, the correct choice $(s)$ is(are)

$(A)$ The current through the circuit, $I$ is $0.3 \ A$

$(B)$ The current through the circuit, I is $0.3 \sqrt{2} \ A$.

$(C)$ The voltage across $100 \Omega$ resistor $=10 \sqrt{2} \ V$

$(D)$ The voltage across $50 \Omega$ resistor $=10 \ V$

Three charges Q(+q) and (+q) are placed at the vertices of an equilateral triangle of side l as shown in the figure. If the net electrostatic energy of the system is zero, then Q is equal to
A convex refracting surface of radius of curvature $20\,cm$ separates two media of refractive indices $\frac {4}{3}$ and $1.6$. An object is placed in the first medium $(μ = 4/3)$ at a distance of $200\,cm$ from the refracting surface. The position of the image formed is.....$cm$
Refer to the figure. When does the the galvanometer $(G)$ deflect?
Image
The work done in turning a magnet of magnetic moment 'M' by an angle of 90° from the meridian is 'n' times the corresponding work done to turn it through an angle of 60°, where 'n' is given by
A biconvex lens with equal radii curvature has refractive index $1.6$ and focal length $10 cm.$ Its radius of curvature will be.......$cm$
A thin glass (refractive index 1.5) lens has optical power of -5D in air. It's optical power in a liquid medium with refractive index 1.6 will be
A negatively charged plate has charge density of $2 \times {10^{ - 6}}\,C/{m^2}$. The initial distance of an electron which is moving toward plate, cannot strike the plate, if it is having energy of $200\,eV$