a rifle of mass 6.2 kilograms recoils at a speed of 221 m/s after firing a 150 gram bullet. with what speed does the bullet fire with

the awnser is d you right bro                      

answer: the correct answer for the fill in the blank is rods.

rods are the specialized photoreceptor cells that are present in the retina of human eye. they are responsible for vision in the night time ( also called scotopic vision). they have very low visual acuity and color distinguishing ability.

as they are responsible for vision in night time, therefore they are found predominantly in the nocturnal animals.