Question

b) the focal length of the eye lense is fixed. c)builfing is an earthquake--prone area should use heavy building material d) like charges atrract each other say true or false for (b) (c) (d)​

Answer 1

Answer:

b)false.c)true.d)false

Answer 2

Answer:

(b)focal lenght of the eye is not fixed, False

(c)False

(d)False

Explanation:

(b)focal lenght of the eye is not fixed as it keeps on changing with the action of cilliary muscles on the eye lens.

(c)earthquake prone areas should have light building material, as if in any case earthquake happens it should do minimum damage and it also  ensures that no one is trapped under the heavy wieght of the building.

(D) it is a fundamental law that like charges repel and unlike charges attract each other.