1.

Equivalent dielectric constant of given arrangement is

Answer»

7.2
9.7
2.5
None of these

Solution :`C_(8)=(epsi_(0)(8)((A)/(2)))/(d//3)=12C`
`C_(24)=(epsi_(0)(24)((A)/(2)))=12C`
`C_(5)=(epsi_(0)(5)((A)/(2)))/(d)=2.5 C`
`C_(EQ)=7.2C+2.5C`
=9.7C


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