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Capacitor question

2008 · Shift 0 · Q73
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  5. /2008 · Shift 0 · Q73

Capacitor question

2008 · Shift 0 · Q73

JEE MainPhysicsCapacitorMCQ+4 / −1
A parallel plate capacitor with air between the plates has capacitance of 9pF.9pF.9pF. The separation between its plates is ′d′.'d'.′d′. The space between the plates has dielectric constant k1=3{k_1}=3k1​=3 and thickness d3{d \over 3}3d​ while the other one has dielectric constant k2=6{k_2} = 6k2​=6 and thickness 2d3{{2d} \over 3}32d​. Capacitance of the capacitor is now
  1. A
    1.8pF1.8pF1.8pF
  2. B
    45pF45pF45pF
  3. C
    40.5pF40.5pF40.5pF
  4. D
    20.25pF20.25pF20.25pF
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