Question

Write any four tests to prove that electrons are the universal constituent of all atoms

Answer 1

Answer:

Explanation:

Four Tests which prove that electrons are the universal constituent of all atoms are-

1. Discharge Tube Experiments.

2. By heating certain metal filaments to high Temperature.

3. By the radioactive substances in the form of Beta rays.

4. Through Photoelectric effect.

Answer 2

The value of An Electrons is $\frac {e}{m}$

Explanation:

The Electrons are the Universal constituent of all atoms can be proved by -

a.) Photoelectric Effect

b.) By the radioactive substances in the form of Beta rays

c.) Discharge Tube Experiments

d.) By heating certain metal filaments to high Temperature

• The emission/ejection of the electrons from a surface (a metal for responding light incident upon it) is referred to as Photoelectric effect.

• It was found that intensity of radiation being incident and the emitted electrons energy are independent of each other.