Image formed on a camera is:
Real, inverted, and diminished
Virtual, upright and diminished
Virtual, upright and magnified
Real, inverted and magnified
In medical field, C.R.O is used to display:
Heart beats
Pictures of organs
Pictures of bones
Blood pressure
The speed of sound in a liquid is …………..than that in gases:
Ten times
Fifteen times
Five times
Two times
Electron gun has an electrode called for controlling the flow of electrons in the beam:
Plate
Grid
Screen
Filament