What did the results of photoelectric-effect experiment establish?

a. electrons are emitted as soon as low intensity, high frequency light hits a metal surface.

b. electrons are never emitted if low intensity light waves strike a metal surface.

c. electrons are emitted if low intensity light has been incident on mental for a long time.

d. electrons are emitted if high intensity light has been incident in metal for a long time.

Thanks For Points Mark Me Brainliest Please

Explanation:

Electrons are emitted as soon as low-intensity, high-frequency light hits a metal surface.

A. Is It

I think the answer would be A. Electrons are emitted as soon as low intensity, high frequency light hits a metal surface. Byee.

-MrBeast

Explanation:

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.