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Standard XII

Physics

Intensity vs Photocurrent

Two identical...

Question

Two identical charges of magnitude +Q are fixed as shown . A third charge -Q is placed mid way between them at point P. Then small displacements of -Q are made in the directions indicated by arrows. The -Q is stable with respect to displacement .

I and III

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I and V

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II and

I V

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III and V

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stable for any small displacement.

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Solution

The correct option is C II and $I V$
If we displace through a displacement d then a restoring force acts to make -Q to come back to make it stable at their.
Same would happen if it goes downward.

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Two identical charges of magnitude +Q are fixed as shown . A third charge -Q is placed mid way between them at point P. Then small displacements of -Q are made in the directions indicated by arrows. The -Q is stable with respect to displacement .

The correct option is C II and IVIf we displace through a displacement d then a restoring force acts to make -Q to come back to make it stable at their.Same would happen if it goes downward.

The correct option is C II and $I V$
If we displace through a displacement d then a restoring force acts to make -Q to come back to make it stable at their.
Same would happen if it goes downward.