Question

Write two examples for each of the following.

1.	A non-luminous object	.......................	.......................
2.	A transparent object	.......................	.......................
3.	A regular surface (for reflection)	.......................	.......................
4.	An object whose shadow can be seen	.......................	.......................

Answer 1

1. A non-luminous object: Moon and book
2. A transparent object: Pure water and plain glass
3. A regular surface (for reflection): Mirror and polished wooden table
4. An object whose shadow can be seen: Child and tree