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Question

There exists a non-uniform electric field along x-axis as shown in the figure.The field increases at a uniform rate along +ve x-axis. a dipole is placed inside the field as shown. Which one of the following is correct for the dipole?
195813_6a56da6627b346cf9cd9fa7d6742d417.png

A
Dipole will move along positive x-axis and will undergo a clockwise rotation
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B
Dipole will move along negative x-axis and will undergo a clockwise rotation
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C
Dipole will move along positive x-axis and will undergo an anticlockwise rotation
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D
Dipole will move along negative x-axis and will undergo an anticlockwise rotation
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Solution

The correct option is D Dipole will move along negative x-axis and will undergo an anticlockwise rotation
the dipole is lapsed in a non-uniform electric field, therefor a force are well as couple acts on it. the force on the negative charge is more (FE), and is directed along ve x-axis. does, the dipole moves along -ve x-axis and rotets in an\quad anti clock wise direction.

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