Instrument used for detecting and testing the nature of charge on a body is called:
Incubator
Spectroscope
voltmeter
electroscope
The oscillations of a system in the presence of which force are called damp oscillations:
Resistive force
Attractive force
Coulomb force
Both a and b
The mirror whose outer surface is reflecting is called:
Concave mirror
Convex mirror
Mirror
Lens
Watt is equal to:
Coulomb per second
Newton per second
Volt per second
Joule per second
One micro coulomb charge is equal to:
10-3c
103c
106c
10-6c
What will be the capacitance of capacitor by joining them in parallel:
Increased
Much less
Decrease
No change
