MCQ- 2 ICSE Physics class 10 ch-6 Modern Physics

Radioactivity and Radiation - Class 10 Physics

1. Who discovered the phenomenon of radioactivity?

Marie Curie
Henri Becquerel
James Chadwick
Ernest Rutherford

Correct Answer: Henri Becquerel

2. Which of the following is a radioactive substance?

Aluminium
Uranium
Copper
Iron

Correct Answer: Uranium

3. Which type of radiation has the highest penetrating power?

Alpha radiation
Beta radiation
Gamma radiation
Neutron radiation

Correct Answer: Gamma radiation

4. Which particle is emitted during alpha radiation?

Helium nucleus
Electron
Proton
Neutron

Correct Answer: Helium nucleus

5. Which radiation has a negative charge?

Alpha radiation
Beta radiation
Gamma radiation
Neutron radiation

Correct Answer: Beta radiation