Question

8. What happen if lens
if lens are not invented
9. menction the uses o
of washing soda​

Answer 1

Answer:

this is the answer.

Explanation:

8.So certainly many discoveries in all areas would not be made without this invention. Another invention based on the lens, which affected the life of most humans is photography, with all its subsequent derivatives including cinema, video and TV. All this would be impossible without lens.

9.Washing Soda is used as cleansing agent for domestic purposes like washing clothes. In fact sodium carbonate is a component of many dry soap powders. - It is used for removing permanent hardness of water. - It is used in the manufacture of glass, soap and paper.