In the visible spectrum, the colour having the shortest wavelength is _____.

What is used to disintegrate bladder stones?

Mica is used in an electric iron, because it is a _____.

 A line on a map joining places having equal atmospheric pressure is called _____.

On addition of salt to water, its _____.

 

If the velocity of a particle is reduced to half of its initial value, then the kinetic energy of the particle will:

Red light is used in traffic signals because _____.