A slab of copper of thickness d/2 is introduced between the plates of a parallel plate capacitor where d is the separation between its two plates. If the capacitance of the capacitor without copper slab is C and with copper slab is C then 
is:
A
B
2
C
1
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Without copper 
with copper 
for copper 
and 
Hence 
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