The equation that uses both wavelength and frequency is c = fλ. c is the speed of light, which is constant. So that means if f increases, then λ must decrease, and vice-versa. Since f and λ are going in different directions then that means that they are inversely proportional.
Answer:
There are extreme temperature variations, ranging from excessive heat to extreme cold.
Explanation:
Mercury being closest to sun gets extremely hot, but its "night" side (the side that is away from sun at a given time) gets very cold cuz mercury has no atmosphere to trap the heat.