1. Electronic signals can travel very long distances in fibers, due to total internal reflection. 2. How does noise affect a signal?

A) It causes the signal to deteriorate.

B) It amplifies the signal.

C) It allows the signal to travel further.

D) It changes the signal as it moves from one medium to another.

an enlarged virtual image

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).