light waves on it
ultra high frequency waves on it
microwaves on it
radio waves on it
To open a door easily, the handle should be fixed
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