All of the following are electromagnetic radiation except

sound waves

gamma waves

microwaves

uv waves

The correct answer to the question is : A) Sound waves.

EXPLANATION:

Before going to answer this question, first we have to understand sound wave.

A sound wave is a longitudinal wave which needs a medium for its propagation. It moves in the form of compression and rarefaction in a medium. The medium may be solid,liquid or gases.

Unlike sound waves, gamma waves, micro waves and UV waves do not require any medium for its propagation. They can travel in space also. They all are included in electromagnetic series.

Hence, the correct answer to the question is Sound waves.

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.