Questions

Dull means not sharp, not shining, not bright, ...

Hence, the given words are all that means the opposite of dull.

Te Sun.

From the time rising it goes around the house upto sunset, but never touches the house.

VRAM or (video RAM), reference to any type of random access memory (RAM) is a dual-ported variant of dynamic RAM (DRAM) used to store the framebuffer in graphics adapters.

An intensive property is a physical quantity whose value does not depend on the amount of the substance for which it is measured. For example, the temperature of a system in thermal equilibrium is the same as the temperature of any part of it. If the system is divided the temperature of each subsystem is identical. The same applies to the density of a homogeneous system, if the system is divided in half, the mass and the volume change in the identical ratio and the density remains unchanged. Additionally, the boiling point of a substance is another example of an intensive property. For example, the boiling point for water is 100 °C at a pressure of one atmosphere, a fact which remains true regardless of quantity.

A Mirage is a naturally occurring optical phenomenon due to unequal heating of different parts of the atmosphere in which light rays bend to produce a displaced image of distant objects or the sky.