What is aquifer?
The groundwater thus gets recharged by this process. At places the groundwater is stored between layers of hard rock below the water table. This is known as an aquifer
What is infiltration?
. The process of seeping of water into the ground is called infiltration.
What is water cycle ?
The water cycle shows the continuous movement of water within the Earth and atmosphere. Liquid water evaporates into water vapour ( gas), condenses to form clouds, and precipitates back to earth in the form of rain ( liquid ) and snow ( solid).
Which Year was observed as the International Year of Freshwater to make people aware of this dwindling natural resource
Year 2003 was observed as the International Year of Freshwater to make people aware of this dwindling natural resource.
Which day celebrated water day ?
22 March is celebrated as the world water day.
Composition of white light
White light is composed of seven colours. these are voilet ,indigo, blue ,green,yellow , orange and red.
Nature of image of concave lens
A concave lens always forms erect, virtual and smaller image than the object.
Nature of image of convex lens
A convex lens can form real and inverted image. When the object is placed very close to the lens, the image formed is virtual, erect and magnified. When used to see objects magnified, the convex lens is called a magnifying glass.
Nature of Image formed by a convex mirror
Image formed by a convex mirror is erect, virtual and smaller in size than the object.