Question

Iris : Pupil :: Ciliary muscles :
2.2 A] Give scientific reasons. (Any two)
1) The weight of a body is different on different planets.
2) It takes time for pieces of Shahabad tile to disappear in
disappears rapidly.
3) One can sense colours only in bright light.​

Answer 1

1) Ans: a) the rate of chemical reaction depend upon the size of the reactants particle taking part in the reaction

b) smaller the size of the reactant particles,higher is the rate of reaction

c) The size of reactant particle is more in pieces of shahabad tile a scompared to powder of shahabad tile

2) Ans:the cell present in the retain and respondible for colour vision are known cone cells.