Question

8. Draw the ray diagram for concave mirror when object is placed in front of the mirror on the
principal axis?



9. What information do you get from a balanced chemical equation?



10. Write any three uses of baking soda?



11. How do you find focal length of a lens experimentally? Write the electronic configuration of Na ,
ca, Zn ,Cu Cr



12. An element has atomic number 19 . where would you expect thi element in periodic table and
why?



13. Balance the following chemical equations

A sodium hydroxide reacts with sulphuric acid

B. Sodium reacts with water



answer please correct ok​

Answer 1

Answer:

Convex mirror : if the reflecting surface of the spherical mirror is curved outwards, it is called a convex mirror.