Question

Identify the electromagnetic waves whose wavelengths lie in the range
1) ${10}^{11}m<\lambda <{10}^{-11}m$
2) ${10}^{-4}m<\lambda <{10}^{-6}m$
Write one use of each.

Answer 1

1. ${10}^{11}m<\lambda {10}^{-11}m$ - Radio waves

They help in contacting the signals from satellite far from the earth. They have high frequency therefore dont scatter.

2.${10}^{-4}m<\lambda {10}^{-6}m$ -Visible light

They help us to see the world in different colors.They give our eyes the color.