IC 555 in the figure given below is configured as an astable multivibrator. It is enabled to oscillate at t = 0 by applying a high input to pin 4.
The pin description is :
1 and 8 – supply; 2 – trigger;4 – reset; 6 – threshold; 7– discharge.
The waveform appearing across the capacitor starting from t = 0, as observed on a storage CRO is