Which uses the refractive properties of light to separate it into its different wavelengths?
a.
white light from the surface of a mirror
b.
colored light as it travels from a solid medium to a liquid medium
c.
visible light as it passes through a lens
d.
sunlight through droplets of water in the atmosphere

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?