18. Two infinite parallel metal planes, contain electric charges with charge densities +5 and - o respectively and
they are separated by a small distance in air. If the permittivity of air is Es then the magnitudes of the field
between the two planes with its direction will be
(a) ole towards the positively charged plane (b) c/co towards the negatively charged plane
(c) c/(28) towards the positively charged plane (d) O and towards any direction
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c is the correct answer
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