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STD 12 - 1. Electric charges and fields — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 1. Electric charges and fields4 Marks
MCQ
Two identical charges $+Q $ are kept fixed some distance apart. A small particle $P $ with charge $q$ is placed midway between them. If $P$  is given a small displacement $\Delta$ , it will undergo simple harmonic motion if
  • A
    $q$ is positive and $\Delta$ is along the line joining the charges.
  • B
    $q$ is positive and $\Delta$ is perpendicular to the line joining the charges.
  • C
    $q$ is negative and $\Delta$ is perpendicular to the line joining the charges.
  • ✓
    $A$ and $C$ both
✓

Answer

Correct option: D.
$A$ and $C$ both
d
$\mathrm{q}$ is $+ ve$ then there will be net repulsive force which will send the charge particle back to its original position so it will be an $S.H.M.$

$\mathrm{q}$ is $-ve$ then there will be net attractice force which will send the charge particle back to its original position so it will be an $S.H.M.$

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