Question

Which of the following pairs of physical phenomenon and the discover is/are correctly matched?

1. James Chadwick	Photoelectric
2. Albert Einstein	Neutron
3. Marie Curie	Radium

Select the correct answer using the code given below:
1. 1, 2 and 3
2. 1 and 2 only
3. 2 and 3 only
4. 3 only

Answer 1

Correct Answer - Option 4 : 3 only

EXPLANATION:

• The correct answer is option 4 i.e., Marie Curie discovered Radium.​

S.No	Scientist Name	Discovered	Information
1.	James Chadwick	Neutron	In 1932, J. Chadwick discovered another subatomic particle that had no charge and a mass nearly equal to that of a proton. It was eventually named a neutron. Neutrons are present in the nucleus of all atoms, except hydrogen.
2.	Albert Einstein	Photoelectric Effect	When the light of a sufficiently small wavelength is incident on a metal surface, electrons are ejected from the metal instantly. This phenomenon is called the photoelectric effect.
3.	Marie Curie	Radium	The first woman to win a Nobel Prize was Marie Curie, who won the Nobel Prize in Physics in 1903 with her husband, Pierre Curie, and Henri Becquerel. Together with her husband, Pierre, she discovered radium, an element widely used for treating cancer, and studied uranium and other radioactive substances In 1911, she won the Nobel Prize in Chemistry for the isolation of radium.