Solve parallel plate capacitor within 5 seconds or even less (NEET AIIMS 2020)

Solve parallel plate capacitor within 5 seconds or even less (NEET AIIMS 2020)
Solve parallel plate capacitor within 5 seconds or even less (NEET AIIMS 2020)
Solve parallel plate capacitor within 5 seconds or even less (NEET AIIMS 2020)

2020)