Physics
A fountain pen works on the principle of

Flow of liquids from higher to lower potential
Viscosity of liquids
Capillary action
Bernoulli's principle

ANSWER DOWNLOAD EXAMIANS APP

Physics
Pressure Cooker cooks faster because

It cooks the food at low pressure
Boiling point decreases with rise of pressure
The material of the cooker is a good conductor
Higher temperature is attained for cooking

ANSWER DOWNLOAD EXAMIANS APP