The commercial unit of electrical energy is:
Joule
Watt
Kilowatt hour
Electron volt
The sound waves are the example of:
Longitudinal waves
Transverse waves
Electromagnetic waves
x-rays
An object is placed at the Centre of curvature of a concave mirror. The image produced by the mirror is located:
Out beyond the centre of curvature
At the centre of curvature
Between the centre of curvature and the focal point
At the focal point
Which of the following is an example of simple harmonic motion:
Motion of a simple pendulum
The motion of ceiling fan
The spinning of the earth on its axis
A bouncing ball on a floor
In fixed capacitor dielectric used is:
Paper
Metal
Mica
Paper & mica
A digital multimeter is used to measure:
Current
Resistance
Potential difference
All of above
Which form of energy is sound:
Earth wire is connected to the:
Power house
Transformer
Ground
Generator