When mass stays the same and you decrease the size of the force how does acceleration change ?

Ared apple is illuminated by a blue light the apple will appear

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

Abar magnet cut in half will form a total ofpoles.a)fourb)eightc)two