You want to place a mirror at a blind turn on the staircase in your house. which would be best suited for this purpose?
a. flat mirror
b. plane mirror
c. convex mirror
d. concave mirror

Convex Mirror

Explanation:

Convex mirror always form virtual and upright image so here at the position of blind turn we need a mirror which always form virtual and upright image to see the position of all objects on the other side correctly.

Now we have two options for such type of mirror condition

1) Plane Mirror

2) Convex Mirror

Since convex mirror has outward convex surface so here it will cover large field of view as compare to plat mirror so it is better to use Convex mirror at the position of blind turn.

coil wire, increase current, put iron inside the coil

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.