Near the hinges
Away from mid-point opposite to hinges
In the middle
None of these
To prevent damage from lightning, lightning conductors are used on tall structures. The lightning conductor
To produce deflection in a television picture tube
To produce sound it is necessary that
Total internal reflection can not take place when light goes from :
Total internal reflection can take place when light travels from
Transformer is based upon the principle of
Transformers are used in
Transverse waves can propagate
Treads on the shoe soles are made to increase
Tube light is filled with