Particle 1 of mass 378 g and speed 3.22 m/s undergoes a one-dimensional collision with stationary particle 2 of mass 393 g. What is the magnitude of the impulse on particle 1 if the collision is (a) elastic and (b) completely inelastic

small = small current large mag large current

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.