Which type of capacitor is cylindrical in shape:
Paper capacitor
Mica capacitor
Variable capacitor
Plates capacitor
the unit of frequency is:
hertz
vibration per second
cycle per second
all a, b and c
The ration of external force applied on the spring to displacement is called:
Hooke’s law
Constant
Spring constant
Force
If the distance between two point charges is reduced to half, the coulomb’s force become:
Half
Two times
One fourth
Fourth times
Bats can hear sound of frequency up to:
100,000Hz
25000Hz
120, 000Hz
1000Hz
Ripple tank is an instrument which is used to study the characteristics of:
Mechanical waves
Light waves
Radio waves
Electro-magnet waves
