Question

D. Write 'T' for true and 'F' for false against each statement :
1. A plane mirror always forms a real image.
2. A watch maker uses a concave lens.
3. Concave mirrors are used as shaving mirrors.
4. The geometrical centre of a lens is called its pole.
5. Convex mirror is used in periscopes.
6. Prism is used to separate white light into a spectrum of colours.
7. A curved and polished piece of glass is called a mirror
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Answer 1

Answer:

yes , yes, no,no,,yes, no, yes