Q8. Differentiate between the following:
1. Image and shadow
2. Reversible and irreversible change
3. Luminous body and non luminous body
4. Xerophytes and Hydrophytes.
Answers
Answer:
1.Image is actually a virtual reflection which can be created from different lenses and mirrors,with the help of the reflection or refraction phenomenons of the light rays.
On the other hand,
Shadow is a patch of darkness on a surface which is created by the blocking of the light rays by an solid opaque object.
2.Reversible changes: The changes which can be brought back to its original form are known as reversible changes. For example, melting of wax and stretching of a rubber band. Irreversible changes: The changes in which the matter cannot be brought back to its original state are known as irreversible changes
3.Objects that can emit light energy by themselves are known as luminous objects. Objects that cannot emit light energy by themselves are known as non-luminous objects. These objects can cause a sensation of light. These objects do not cause the sensation of light.
4.Xerophytes are plants that have adapted to grow in areas with low or no precipitation at all. They are also called desert plants. ... Hydrophytes are plants that have adapted to grow in areas of high precipitation or inside waterbodies. They have a thick layer of water resstant cuticle on them
Explanation: