Question

2. Write two artificial sources of light.
3. How can non-luminous objects be made luminous?
4. Write two examples of transparent materials.
5. Write two examples of translucent material.​

Answer 1

Answer:

2.torch,electric bulb.

3.a non luminous object can be made luminous by heating.

4.water,clear glass,etc.

5.frosted glass, wax paper.