Which event causes the formation of the electric current produced by the photoelectric effect?
A. Electrons flow in waves from one atom to another when light
strikes them.
B. The waves of light cause electrons to flow in different directions
within an atom.
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C. Electrons are knocked off the surface that the light strikes by
"particles" of light
D. Electrons are particles, so they flow through the air from a light
bulb to a metal surface.
SUBMIT

C

Explanation:

Light with energy above a certain point can be used to knock electrons loose, freeing them from a solid metal surface, according to Scientific American.

photoelectric effect is the emission of electrons when electromagnetic radiation, such as light, hits a material

i will answer your question if you answer mine

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.